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answer the questions provided. A Block that weighs 50 kg is acted upon by P = 100 N.
1. What is the P in component form?
2. What is the
3. What is the magnitude of the angle of the friction?
4. What is the resultant force of the frictional force and normal force?
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- A 50.7 kg box is resting on a horizontal floor. A force of 317.1 N directed at an angle of 34.1° below the horizontal is applied to the box. The coefficient of static friction between the box and the surface is 0.5, and the coefficient of kinetic friction is 0.2. The force of friction on the box is:A 1.850 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is us = 0.555 and the coefficient of kinetic friction is Hk 0.305. At time t = 0, a force F 6.19 N is applied horizontally to the block. State the force of friction applied to the block by Us.k the table at times t = 0 and t > 0. t = 0 6.19 N 1 > 0 6.19 Consider the same situation, but this time the external force F is 12.5 N. Again, state the force of friction acting on the block at times t = 0 and t > 0. 5.53 t > 0 5.53 t = 0 N IncorrectA 5.510 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is u, = 0.605 and the coefficient of kinetic friction is µk = 0.205. At time t = 0, a force F = 20.1 N is applied m horizontally to the block. State the force of friction applied to the block by Us,k the table at times t = 0 and t > 0. 32.67 11.07 t = 0 N t > 0 N Incorrect Incorrect Consider the same situation, but this time the external force F is 40.6 N. Again, state the force of friction acting on the block at times t = 0 and t > 0. t = 0 32.67 N t > 0 11.07 N
- A 25kg wooden plate is held in place by two strings attached to the ceiling and the wall. The string attached to the ceiling makes an angle 40o with the horizontal and the string attached to the wall makes 90o with the wall. Determine the force in each string.A 2.220 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is µs = 0.605 and the coefficient of kinetic friction is µ = 0.255. At time t = 0, a force F = 8.10 N is m Us,k applied horizontally to the block. State the force of friction applied to the block by the table at times t = 0 and t > 0. t = 0 N t > 0 N Consider the same situation, but this time the external force F is 16.3 N. Again, state the force of friction acting on the block at times t = 0 and t > t = 0 N t > 0 N * TOOLS x10If the uniform concrete block has a mass of 500 kg, determine the smallest horizontal force P needed to move the wedge to the left. The coefficient of static friction between the wedge and the concrete and the wedge and the floor is 0.3. The coefficient of static friction between the concrete and floor is 0.5. ANSWER: P = 1797.52 N = 1.80 kN 3 m B 150 mm; 7.5° a.) the angle of friction between the wedge and the concrete and the wedge and the floor. Answer: 0wedge and concrete = 0wedge and floor = 16.7° b.) the coefficient of static friction between the concrete and floor. Answer: 0concrete and floor = 263.56° %3D
- A 5.740 kg block of wood rests on a steel desk. The coefficient of static friction between the block and the desk is u, = 0.555 and the coefficient of kinetic friction is µy = 0.305. At time t = 0, a force F = 19.2 N is applied F horizontally to the block. State the force of friction applied to the block by Us,k the table at times t = 0 and t > 0. t = 0 t > 0 N Consider the same situation, but this time the external force F is 38.8 N. Again, state the force of friction acting on the block at times t = 0 and t > 0. %3D t = 0 t > 0 NA 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see figure). The massless rope attached to the crate makes a 22.0° angle above the surface of the ramp. The coefficients of friction between the crate and the surface of the ramp are uk = 0.450 and ls = 0.650 The pulley has no appreciable mass or friction. What is the MAXIMUM weight w that can be used to hold this crate stationary on the ramp? w = ? 22.0° Crate Ramp 30.0°A pulley is attached to one end of a rough plank, which makes an angle of 34◦ with the horizontal. A box is held at rest on the plank by a string that is attached to the box and passes over the pulley. A bucket of water is attached to the other end of the string and hangs freely. The coefficient of static friction between the plank and the box is 0.8. The box remains at rest but is on the point of slipping up the plank. The bucket of water has mass 7.5 kg.Name the four forces acting upon the box and draw a force diagram showing them, including the angles that show their directions.
- A pulley is attached to one end of a rough plank, which makes an angle of 34° with the horizontal. A box is held at rest on the plank by a string that is attached to the box and passes over the pulley. A bucket of water is attached to the other end of the string and hangs freely. The coefficient of static friction between the plank and the box is 0.8. The box remains at rest but is on the point of slipping up the plank. The bucket of water has mass 7.5 kg. pulley box bucket of water 34° Model the box and the bucket of water as particles, the string as a model string and the pulley as a model pulley. (a) By considering the forces acting on the bucket of water, find the magnitude of the tension in the string (in newtons) in terms of g and the magnitude of the acceleration due to gravity (in ms-2). (b) State the four forces that act on the box and draw a force diagram showing them, including the angles that show their directions. (c) Take the unit vector i to be in the direction up the…When the load L is 4.7 m from point C, the tension T in the cable has a magnitude of 5.4 kN. Express T as a vector using the unit vectors i and j. Assume a = 4.7 m, b = 2 m, c = 4.3m. T x j) kN L b Answer: T = (i it iA fish of mass 1kg is lying still on an inclined plane at 3o degrees above the horizontal. the magnitude of the normal force exerted by the plane on the fish is. 0N 9.8N 8.5 N 4.9N