Give situations wherein friction is produced between two objects. Cite examples where cables are needed in structures.
Q: A screw jack has a thread with a pitch of 5 mm and diameter 25 mm. The coefficient of friction is…
A: Given data: Thread angle can be calculated as, Friction angle can be calculated as,
Q: The journals of a shaft are 380 mm diameter, it runs at 105 rpm and the coefficient of friction…
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Q: A weight of 200lbs. rests on an inclined plane that makes an angle of 35° with the horizontal. If…
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Q: screw jack has a thread with a pitch of 5 mm and diameter 25 mm. The coefficient of friction is…
A: Given:Mean diameter, d=25 mmcoefficient of friction, μ=0.25Pitch of screw, p=5 mmLoad on the jack,…
Q: In a thrust bearing the external and the internal diameters of the contacting surfaces are 320 mm…
A: Solution is given below.
Q: Discuss the work and energy relation when using spring in a problem involving rigid body
A: Concepts of work and energy give us information to solve various kinetics problems. When a…
Q: An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the…
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Q: A two-tier system to repair bridges is supported by two steel cables for each platform. Lengths of…
A: Given:- lA=55in lD=180in Workers load=160lb ∆L=0.01in To find:- Diameter of cable A, B, C and D
Q: The doorstop depicted in Fig. 16–2a has the following dimensions: a = 4 in, b = 2 in, c = 1.6 in, w1…
A: Give data c=1.6 in w1=1 inw2=0.75 inF=10 lbf Pav=Average pressurePmax=Maximum pressure
Q: An overhang shaft carry a 900mm diameter pulley, whose center is 250mm from the center of nearest…
A: Write the given data:
Q: Find the Normal force if friction force is 444 N and coefficient of friction is 0.37
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Q: A load of 910 N is lying on an inclined plane, whose inclination with the horizontal is 30°. If the…
A: Given data: The weight of the load, W = 910 N. The inclination with horizontal, θ=30°. The…
Q: A screw jack mechanism is to be incorporated into the machine as part of a levelling system. The…
A: Given data as per the question Diametre of jack =45 mm Thread pitch =6 mm coefficient of friction…
Q: or the fluid power automobile lift system of Fig. 1, the hydraulic piston has a 250-mm diameter. How…
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Q: (a) In a certain lifting machine load of 100N is lifted by an effort of 8N and efficiency of the…
A: Part (a) Given data: Load, W = 100 N. Effort, P = 8 N. The efficiency of the machine, ƞ = 60%.…
Q: Consider the information in the image below. Graph FRICTION FORCE (mg sin ( ?)vs NORMAL FORCE (mg…
A: The graph of normal force vs static friction force is given below -
Q: Metal plate A, shown in Fig. 6.70, is attached to block B by a double square threaded screw, which…
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Q: example / sliding a body (50N) on an inclined surface of its vertical height (3m) interrupting "a…
A: Given: The weight of the body is W=50 N. The vertical height of inclined surface is 3 m and…
Q: Discuss Uniform temperature loads (TU)
A: Temperature loads over a structure can be uniform in nature which is base upon specific field of…
Q: Q8) A wire of a perfectly plastic material has a starting diameter of 3 mm. Assume no friction and…
A: Given Initial diameter, D = 3 mm Final diameter, d = 1 mm Find Number of passes, N
Q: Whqt are Rigid Bodies? Give at least 5 examples with description.
A: Given Data : Rigid bodies
Q: 6.10. A car with its brakes locked will remain stationary on an inclined plane of dry concrete when…
A: Given Angle = 45o
Q: The drive drum of a belt conveyor consists of a rope and a pulley. It is stretched by a stretching…
A: Given: Tension on the tight side T1=4000×9.81=39240N Tension on the loose side T2=1900N Coefficient…
Q: Figure Q3(a) If the angle of inclination of the string connecting pulley and the block is decreased,…
A: Let us draw the free body diagram Using the condition of the equilibrium T=Weight of the block
Q: The carabiner below has a load rating of 22kN on it's long axis. Is it strong enough to lift a 2021…
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Q: 3- Talk about the factor that affects the value of friction force.
A: Disclaimer: “Since you have asked multiple questions, we will solve the first question for you. If…
Q: A steel ball slides against an aluminum flat surface at two different normal loads. At low normal…
A: Given At low load Coefficient of friction = 0.4 Groove width, r = 0.4 mm At high load…
Q: A bolt is specified to be tightened to a torque of 50 ft Ibf. You are applying a vertical force, F,…
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Q: In a certain lifting machine load of 100N is lifted by an effort of 8N and efficiency of the machine…
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Q: Compute the coefficient of friction Friction force=400 N Normal force=670 N
A: Given data : Normal force N'=670 N Friction force F=400 N Required : Coefficient of friction
Q: (a) Estimate the number of cycles to failure. (b) If the bar is also placed in an environment with a…
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Q: In the Figure 3, if m=15 kg, 0=30°, and static coefficient of friction = 0.25, then the maximum…
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Q: You have to lift a load of 500 N. Which pulley system will you prefer? Why? Find out the effort to…
A: To lift a load of 500 N single movable pulley system will be preferred over a single fixed pulley…
Q: Describe the failure of a hollow torque tube. Calculate the forces creating the failure
A: It is asked to describe the failure in the hollow torque tube
Q: An acme thread power screw that has a mean diameter of 25 mm and pitch of 5 mm is used to lift a…
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Q: Step 4: Derive Theoretical Expressions Draw a free-body diagram for the knot and derive expressions…
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Q: FRICTION Research about friction. Provide a hand written research work. Include diagrams, tables,…
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Q: A hoist in a factory lifts a steel load of mass 5 tons to a height of 25 m. The overall efficiency…
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Q: A certain screw jack has a pitch of 5mm and mean diameter of 180mm. The coefficient of friction…
A: We need to calculate the torque in raising of load
Q: Explain the laws of Static Friction.
A: Law Of Static Friction
Q: A screw jack must raise a load of 500 kg. The thread has a pitch of 10 mm and a diameter of 50mm.…
A: To raise the load, Efficiency, ηraise=29.52% Effort, FE=66.112 N To lower the load, Efficiency,…
Q: A pulley 24 inches in diameter transmits 53 and a half horsepower at 500 rpm. The arc of contact…
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Q: The crane boom has a noticeable taper along its length. Explain why. To do so, assume the boom is in…
A: given; The crane boom has a noticeable taper along its length. Explain why. To do so, assume the…
Q: A pull of 60 N inclined at 25° to the horizontal plane is required just to move a body placed on a…
A: Given data as per the question Pull force =60 N Inclination angle =250 Push force v=75 N
Q: A pulley 590 mm in diameter transmits 50 kW at 520 rpm. The arc of contact between the belt and…
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Q: Using a block and tackle system with an IMA of 4, you measure the force required to lift a piano,…
A: Given that the IMA=4, AMA=3.1 We know that, efficiency =(AMA/IMA)*100%
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- Please answer and show how you got it You are on an elevator fixed to a wall that can move up and down freely while you pull with a force of 150 N on a massless rope (the orange line in the diagram below) with length L. This rope is connected to one end of a beam with the same length, L, and mass m=20 kg. The left end of the beam is in contact with the same wall the elevator is on and the coefficient of static friction =0.2 between the beam and the wall. See diagram below for a representation of the situation and note that free fall acceleration points directly downward 0 L Part A) Label all the forces acting on the beam and discuss the direction of any torques exerted on the beam about the contact point between the beam and the wall Part B) What is the maximum angle the beam can subtend with respect to the horizontal _m such that it will just begin to slip? Potentially useful trig identities are sin(2x)=2sin(x)cos, sin(180-x)=sin(x), sin(90+x)=cos(x)In a simple machine, an effort of 100 Newton lifts a load of 840 Newton. if the distance moved by the effort is 20cm and that by load is 2 cm,find: (i) Mechanical advantage (ii) Velocity ratio (iii) Efficiency (iv) Effort lost in friction (v) friction in terms of load(2) Consider the pulley at the top of the plane. How does the friction in the pulley depend on the tension in the string and the angle of the plane? State clearly, and derive the equation for the pulley friction. your assumptions
- How can I differentiate between internal and external forces in fbds. In problem 5.49 what is the difference between the two casesA manual chain hoist is a machine used to lift a 125 kg crate. A force of 200 N is applied to the effort chain through a distance of 3m, and the crate is lifted a distance of 0.4m. What is the Mechanical Advantage provided by the chain hoist?"Suppose someone with a body weight of 75 kg is lifting a box weighing 15 kg. If their back forms an angle of 70 degrees with the horizontal plane, and the distance from the object to the center of their body is 0.5 cm. The questions are as follows: 1. Create a free-body diagram for the above condition and apply the sign convention for forces and moments. 2. Calculate the magnitude of the compression force (F compression) and the shear force (F shear) generated. 3. Analyze whether this job is safe to perform."
- The ankle is an example of a class II lever, where the load and the applied force are on the same side of the fulcrum with the load closer to the fulcrum; just like a wheelbarrow (see Fig. 2). When a person stands on their tiptoes, the ball of the foot is the fulcrum, and the weight of the body is the load that acts downward in between the fulcrum and the calf muscle. The calf muscle contracts to generate an upward force that counters the weight of the body. Note that we have omitted the normal force of the ground in the figure because it acts at the fulcrum and thus produces no torque. Class II levers like ankles and wheelbarrows are useful because they provide mechanical advantage, by amplifying the input force to provide a greater output force. In other words, we can lift a load without having to lift the full weight of the load. Mechanical advantage comes at a cost. If the output force to input force ratio increases when we use a lever, what decreases?A webassign.net O eBook 12. DETAILS OSUNIPHYS1 6.P.124. MY NOTES ASK YOUR TEACHER As shown below, the coefficient of kinetic friction between the surface and the larger block is 0.20, and the coefficient of kinetic friction between the surface and the smaller block is 0.30. If F = 75 N and M = 4.0 kg, what is the tension (in N) in the connecting string? 2M M Additional Materials eBook 13. DETAILS PREVIOUS ANSWERS OSUNIPHYS1 6.P.126. MY NOTES ASK YOUR TEACHE Two blocks are stacked as shown below, and rest on a frictionless surface. There is friction between the two blocks (coefficient of friction u). An external force is applied to the top block at an angle 0 with the horizontal. What is the maximum force F that can be applied for the two blocks to move together? (Enter theIn a belt arrangement two pulleys are connected by flat belts having same diameters. Themaximum force on the tight side of belt is 662 N. If co-efficient of friction is 0.3 thenwhat is maximum force on the slack side of the belts?
- On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3 , length 91.4 cm and diameter 2.85 cm from a storage room to a machinist. Calculate the weight of the rod, w. Assume the free-fall acceleration is g = 9.80 m/s2 . A hydraulic press for compacting powdered samples has a large cylinder which is 10.0 cm in diameter, and a small cylinder with a diameter of 2.0 cm. A lever is attached to the small cylinder as shown in figure. The sample, which is placed on the large cylinder, has an area of 4.0 cm2. What is the pressure on the sample if F = 310 N is applied to the lever? A spherical balloon has a radius of 7.15 m and is filled with helium. The density of helium is 0.179 kg/m3, and the density of air is 1.29 kg/m3. The skin and structure of the balloon has a mass of 950 kg . Neglect the buoyant force on the cargo volume itself. Determine the largest mass of cargo the balloon can lift.. (a) In a certain lifting machine load of 100N is lifted by an effort of 8N and efficiencyof the machine is 60%. Calculate the effort lost in friction and load lost in friction.bIn a machine the effort required to lift certain load is 150N, when efficiency is 65%. Findthe ideal effortStatics and rigid bodies. Complete solution