In the figure, two blocks are connected over a pulley. The mass of block Ais 8.50 kg and the coefficient of kinetic friction between A and the incline is 0.370. Angle 6 of the incline is 45.0°. Block A slides down the incline at constant speed. What is the mass of block B? Frictionles, massless pulley
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- In the figure, the block of mass 2.00 kg accelerates down the inclined plane. The coefficient of kinetic friction is 0.200 and angle of the inclined plane is 30.0°. What is the acceleration of the block? normal force N friction force f mg sine mg cose mg O 3.05 mis? O 5.05 m/s? O 2.05 m/s? O 4.05 m/s?a person is trying to judge whether a picture (mass =2.59kg) is properly positioned by temporarily pressing it against a wall. the pressing force is perpendicular to the wall. the coefficient of static friction between the picture and the wall is 0.650. What is the minimum amount of pressiong force that must be used? answe is 39NIn the figure, two blocks are connected over a pulley. The mass of block A is 7.30 kg and the coefficient of kinetic friction between A the incline is 0.150. Angle 8 of the incline is 49.0°. Block A slides down the incline at constant speed. What is the mass of block and 8? Frictionless, massless pulley- Number i Units B
- Santa Claus tries to drag his bag of presents along a horizontal surface by a red rope that is angled at 55 degrees above the horizontal. Santa Claus applies a force due to tension of 4500N along the red rope. This is the minimum force to just start the bag in motion. The coefficient of kinetic friction between the bag and the ground is 0.3 and the coefficient of static friction is 0.5. What is the mass of the bag?A boy exerts 50.0 N to push an object across a horizontal surface at constant velocity. If the object has a mass of 10.0 kg, what is the coefficient of kinetic friction between the object and the surface? How much force is needed in Problem 2 if the boy exerts the force at an angle of 30.0° above the horizontal.Box 1, a wooden box, has a mass of 8.60 kgand a coefficient of kinetic friction with theinclined plane of 0.35. Box 2, a cardboard box,sits on top of box 1. It has a mass of 1.30 kg.The coefficient of kinetic friction between thetwo boxes is 0.45. The two boxes are linked bya rope which passes over a pulley at the top ofthe incline, as shown in the diagram. The inclined plane is at an angle of 38.0° with respect to thehorizontal. (a) What is the acceleration of each box? (b) Now consider all surfaces are frictionless. Then calculate the amount of force with directionto prevent the sliding of the boxes.
- Box 1, a wooden box, has a mass of 8.60 kgand a coefficient of kinetic friction with theinclined plane of 0.35. Box 2, a cardboard box,sits on top of box 1. It has a mass of 1.30 kg.The coefficient of kinetic friction between thetwo boxes is 0.45. The two boxes are linked bya rope which passes over a pulley at the top ofthe incline, as shown in the diagram. The inclined plane is at an angle of 38.0° with respect to thehorizontal. Now consider all surfaces are frictionless. Then calculate the amount of force with direction to prevent the sliding of the boxes.Consider the figure shown in the following figure. You are loweringtwo boxes, one on top of the other, down a ramp by pulling on a ropeparallel to the surface of the ramp. Both blocks move with constantvelocity of 10.0 [m/s]. The coefficient of kinetic friction between theramp and the lower box is 0.555 and the coefficient of static frictionbetween the two boxes is 0.750. A. Draw the Free-Body diagram of both blocks. Set the ?-axis parallel to the ramp. B. Write Newton’s 2nd law along the ? and ? directions for both blocks considering their state of motion (accelerations). C. What are the magnitude and direction of the frictional force on the upper box? D. What is the magnitude of the applied force? E. Determine the angle at which the top block will start to slide down the bottom block.Consider the figure shown in the following figure. You are loweringtwo boxes, one on top of the other, down a ramp by pulling on a ropeparallel to the surface of the ramp. Both blocks move with constantvelocity of 10.0 [m/s]. The coefficient of kinetic friction between theramp and the lower box is 0.555 and the coefficient of static frictionbetween the two boxes is 0.750. A. Draw the Free-Body diagram of both blocks. Set the ?-axis parallel to the ramp. B. Write Newton’s 2nd law along the ? and ? directions for both blocks considering their state ofmotion (accelerations). C. What are the magnitude and direction of the frictional force on the upper box? D. What is the magnitude of the applied force? E. Determine the angle at which the top block will start to slide down the bottom block.
- A person pushes on a stationary 125 N box with a force of 93N at 30 degrees below the horizontal. The coefficient of static friction between the box and the horizontal floor is 0.76. what is the normal force on the box? what is the friction force on the box? what is the largest the friction force could be? the person now replaces his push with a 93N pull at 30degrees above the horizontal. Find the normal force on the box in this case.In the figure, two blocks are connected over a pulley. The mass of blockA is 15.0 kg and the coefficient of kinetic friction between A and the indline is 0.350. Angle e of the incline is 33.0° BlockA slides down the incline at constant speed. What is the mass of block B? Frictionless, massless pulley Number UnitsA sled is on a horizontal surface and a rope with tension T is pulling on it at an angle e above the horizontal. The sled had mass M and does not move due to the frictional force. In this case the coefficient of friction is ug. In terms of the variables given and g, what is the magnitude of the frictional force in this case? Select one: O a. Tcose O b. H, Mgsin0 Ос. Tsin® O d. H, Mgcose