105_friction_report_f23

Return to page 61 of the Student Module Booklet and begin Lesson 3. For questions 11 to 14, read each question carefully. Decide which of the choices BEST completes the statement or answers the question. Place your answer in the blank space given. 11. You can reduce the braking force required to stop a car by A. lengthening the braking time B. reducing the braking time C. increasing the friction between the tires and the road D. increasing the friction between the brake pads and drums 12. To decrease the forces experienced in an accident, A. decrease the time over which the change in momentum occurs B. increase the time over which the change in momentum occurs C. increase the change in velocity D. increase the mass of the vehicle

Needed to be Solved Q2 correctly and get the thumbs up please show neat and clean work. Please provide correct solution only and take your time

The motor exerts a force of F= (201³) N on the cable, where t is in seconds. (Figure 1) Figure 1 of 1 Part A Determine the speed of the 25-kg crate when t-5s. The coefficients of static and kinetic friction between the crate and the plane are , -0.3 and 4 -0.25, respectively. Express your answer to three significant figures and include the appropriate units. HÅ Value Submit Request Answer < Return to Assignment Units Review Provide Feedback

Apcar Leaming earning.com/public/activity/5000001/assessment room Google Docs A aeries L Pretest: Unit 5 81 m Apex Leaming - Courses A. 40 m/s ← PREVIOUS Google Slides music Question 5 of 32 A roller coaster car is released from rest as shown in the image below. If friction is neglected, the car will oscillate back and forth across the "dip" in the roller coaster. What is the approximate velocity of the roller coaster car each time it reaches the bottom of the roller coaster in the image? (Recall that g = 9.8 m/s².) chstv mhbo library bell schedule u ba

Keeping the total mass constant 1.  Look at the data: as the net force increased, what happened to the acceleration? Did it increase, decrease or stay constant? 2.  Did a change in the net force produce a change in acceleration by the same factor? Do your results agree with Newton’s 2nd Law? 3.  Make a plot of Net Force vs. Experimental Acceleration and draw the best fitting line.

please answer all 4 parts and type answer please  You have a massless spring with a relaxed length of 13.8 cm. (Draw a picture and a free body diagram for the object for parts A and B situation below.) A. If you hang the spring vertically with a 0.92 kg weight on it, the spring is now 17.6 cm long. What is the spring constant k? B. If you set the spring on the ground in a vertical position and set a 1.2 kg weight on top of it, how far is the spring compressed? What is the length of the spring when the weight is on it? C. If you hold the spring in a horizontal orientation, how much would you need to compress it to create a restoring force of 18 N from the spring? D. How much would you need to stretch the spring to get the same 18 N restoring force? Explain.

1.) Consider the diagram below. Mass Ma = 5kg and Mb = 50kg. The coefficient of kinetic friction between the black Ma and the table top is .2 = uk. Assume the tension in the cord is uniform throughout its length, the acceleration of each block is the same, and the pulley has no mass or friction. Calculate: a.) The acceleration in the system. b.) The tension T in the cord. mA mB

k) Incline the track so that the block travels down it with constant velocity. Measure the inclination ("angle of repose") of the track and from this determine the coefficient of friction, How does this value of µ compare with your previous value? Pulleys: a) Consider the following problem: Suppose a 500g mass is hung from a spring scale as shown in figure 1. Predict what reading (Newtons) the spring scale will read. What force F must you exert to hold up the mass and how does this compare with the tension in the string and scale reading? F ol m Prediction: deid b) Suppose instead that a string is placed over the pulley and attached to another 500g mass as shown in the figure. Predict what the readings will be on each of the spring scales shown in the figure. F Prediction: ni n b o 4

Provide a complete solution to each problem. 1. Garfield and Jon fought. To patch things up with Jon, Garfield caught a mouse who was eating Jon's favorite cheese in the last few days. While the mouse was sleeping on a rug, Garfield put a cage on it and drag the rug towards Jon with a constant honzontal force of 4N at a constant speed v. If Garfield's force did work at a rate of 8 W, a. How fast was he pulling on the rug? b. How much work did Garfield do in 5 s?

Consider the car shown in Eloure 1) Suppose that g(x)-20 Neglect the size of the car in the calculation Figure y(x) 100 m (1-10000) 111, where a is in 111 1 of 1 Part A Determine the maximum constant speed at which the 2-Mg car can travel over the crest of the ni at A without leaving the surface of the road Express your answer to three significant figures and include the appropriate units. Value Submit Provide Feedback 5 Request Answer Units ?

PRE-LAB WORK: THE METHOD QUESTIONS 1. Create a force diagram of the car as it moves along the track. 2. Create a force diagram of the mass hanger as it moves towards the ground. 3. Create a force diagram of the system car and mass hanger as they move together. 4. How does the acceleration of the car compare to the acceleration of the mass hanger? Justify your answer. 5. What causes the system to accelerate? 6. Do you expect the acceleration of your system to be smaller than, greater than or equal to the acceleration due to gravity? Justify your answer. 7. Using Newton's Second Law and the diagram you created in question #3, give the acceleration of the system as a function of the masses of the cart and the hanger.

7. Given the graph below answer the follow- ing questions. a. What is the value of for this system? b. If the frictional force is 1.5 N, what is FN? c. Does tripling F triple Fappled? d. Do Fpplied and Fy act in the same direction? Explain why or why not. 2 4 8 FN (N) 6 2. (N)

Learning Objectives: In this assignment students will use Newton’s laws and solvesystems of symbolic equations to find quantities of motion such as position, velocity,acceleration and time. Students will represent information in multiple ways. Studentswill make predictions and assess their work.Problem Statement: An object of mass m rests at the top of a smooth slope ofheight h, length L and angle ?. The coefficient of kinetic friction ??. A very smallpush overcomes static friction, and the object begins to slide down the slope.Using your knowledge of kinematics, determine a symbolic expression for the object’sspeed when it reaches the bottom of the hill. This should be in terms of some of all ofgiven/known variables m, h, L, g, ? and ??. Check the physical units of yourexpression.

Physics Question

Solve what are asked for in the following problems. Show complete solutions by showing the following: a) FBD with complete label used in solving the problem including the substitution of data in the formula c) magnitude of answer rounded off to 2 decimal places or to the nearest hundredths b) Derived formula to be SA5) Find the KE of a 500-g object after 1.0 meter of its fall from the top of a building. SA6) If the PE of the object in SA5 is twice as its KE, how high is it from the floor/ground? SA7) If the same object in SA5 and SA6 is to be placed back on top of the building where it was dropped, what will be its PE?

2. A 200 N force is applied to the side of a box sitting on the floor causing an acceleration of 2.55 m/s2. The coefficient of kinetic friction between the box and the floor is 0.25 and the coefficient of statis friction is .40 a. ) what is the weight of the box? b.) what is the mass of the box?  Show all work. Use Newton's full second law equation: Fa + Ff  = m a

Rope Swing You want to go on a rope swing but you are concerned that the rope (which is 19 m long) might break. The rope is rated for 3648 N. You have determined that at the lowest point of the swing you will be going 20 m/s. Assume your mass is 114 kg. Part 1 of 2 Determine how much tension will be in the rope at the lowest point. Express your answer with the appropriate mks units.

we have this simulation values : You will be starting with a crate that has a mass of 100 kg and a coefficient of sliding friction of 0.3 and a coefficient of static friction of 0.5. answer this questions : Q1- Place the crate on the ramp with the angle at 20o. What is true about the parallel force and the friction force if the crate does not go down the ramp? Slowly increase the angle until the block JUST starts to move.  Use the angle to calculate μs and compare to the given value for μs for the crate.

INMOTION>>> gpb.org/physics-motion Practice Problems Date: Work each of the following problems. SHOW ALL WORK. 1. The earth remains in orbit around the sun due to the force of gravity. How does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun? 2. Two objects exert a gravitational force of 4 N on each other. a. If the mass of one object is doubled, what will be the new force of gravity between the two objects? b. If both masses are doubled, what will be the new force of gravity between the objects? c. If the masses do not change, but the distance between the objects is doubled, what will be the new force of gravity between them? d. If both the masses and the distance between the objects are doubled, what will be the new force of gravity between them?

A rocket with mass 4.00x103 kg is in a circular orbit of radius 7.30x10 m around the earth. The rocket's engines fire for a period of time to increase that radius to 8.80x106 m, with the. orbit again circular. What is the change in the rocket's kinetic energy? Does the kinetic energy increase or decrease? Express your answer with the appropriate units. Enter positive value if the kinetic energy increases and negative value if the kinetic energy decreases. AK = Value Submit Request Answer Part B What is the change in the rocket's gravitational potential energy? Does the potential energy increase or decrease? Express your answer with the appropriate units. Enter positive value if the gravitational potential energy Increases and negative value if the gravitational potential energy decreases. AU= Value 6 Units Submit Request Answer Units ?

The block is at rest as shown. What is the spring constant of the spring as shown, in N/m? Use g = 10 m/s2. Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

Practice Problems Date: gpb.org/physics-motion Work each of the following problems. SHOW ALL WORK. 5. A 25 kg block is pulled with an applied force of 200 N across a horizontal surface. The block experiences a frictional force of 75 N. a. Draw a free-body diagram for the block, including all forces acting on the block. b. Determine the net force acting on the block. c. Calculate the acceleration of the block.

Please show formulas you use to resolve the problem. Please be clear on your answer. Attached is the formula and all you need to resolve the problem. Please show all your wok and formulas for the step you use to resolve problem

1.Using your measurements from Table 1, calculate the total kinetic energy of the two carts before collision for each trial (this is the initial kinetic energy, K). Show your calculations below and record your results in Table 2. 2. Using your measurements from Table 1, calculate the total kinetic energy of the two carts after collision for each trial (this is the final kinetic energy, Kʹ). Show your calculations below and record your results in Table 2. 3. Calculate the % change in kinetic energy during the collision for each trial. Show your calculations below and record your results in Table 2. % change = final − initia/ initial × 100 4.You will probably find that the total momentum changed slightly during each trial. Explain what might have caused the total momentum of your system to change during the collisions. 5.You should have found that the collision reduced the total kinetic energy of your system in each trial. Where did the kinetic energy lost during the collision go? In…