two masses, M and 3M, are connected by a lightweight string which passes over an ideal pulley. the heavier mass slides across a level, frictionless surface and the lighter mass hangs vertically. As the lighter mass moves downward through a distance h, determine a, The work done on M by tension b, The work done on M by gravity, and c, the change in kinetic energy of M

two masses, M and 3M, are connected by a lightweight string which passes over an ideal pulley. the heavier mass slides across a level, frictionless surface and the lighter mass hangs vertically. As the lighter mass moves downward through a distance h, determine a, The work done on M by tension b, The work done on M by gravity, and c, the change in kinetic energy of M

Similar questions

A 3.7-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 0 = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following. (a) the work done by F (b) the work done by the force of gravity (c) the work done by the normal force between block and wall (d) By how much does the gravitational potential energy increase during the block's motion?
A 100 kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.2. What should be the magnitude of the force, so that the net work done by it and the kinetic frictional force is zero?
A 3.7-kg block is pushed 3.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 0 = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following. (a) the work done by F (b) the work done by the force of gravity (c) the work done by the normal force between block and wall (d) By how much does the gravitational potential energy increase during the block's motion?
11. A person pushes a m = 2.60 kg carton a distance d = 4.20 m along the floor by a constant force of magnitude F = 16.0 N directed at an angle 0 = 30.0° below the horizontal as shown in the figure. Assume the floor is frictionless. (a) Determine the work done on the carton by the applied force (the force on the carton exerted by the person). (b) Determine the work done on the carton by the normal force exerted by the floor. (c)Determine the work done on the carton by the gravitational force. (d)Determine the work done by the net force on the carton. m
A factory worker pushes a 24.0 kg crate a distance of 8.0 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.24. What magnitude of force must the worker apply? How much work is done on the crate by this force? How much work is done on the crate by friction?
A woman places a 2 kg block against a horizontal spring of force constant K = 300 N/m and compresses it 9 cm. a) Find the work done by the woman and the work done by the spring.b) The block is released and leaves the spring when the spring is at its original position. Find the speed of the block when it leaves the spring.
A 1350-kg car is traveling with an initial speed of 25.0 m/s. Determine the car's speed after -2.20 × 10° J of net work is done on the car. X m/s
Consider the skateboarder in the Figure. If she has a mass of 55 kg, an initial velocity of 20 m/s, and a velocity of 12 m/s at the top of the ramp along horizontal direction. After that she flies into the air and strikes the ground. (Ignore air friction and the kinetic energy of the skateboard) a)What is the work done by friction on the skateboarder? (b)Calculate the flight time of the skateboarder. (c)Calculate the velocity at which she strikes at the
(8c7p19) A cord is used to vertically lower an initially stationary block of mass M = 45 ką at a constant downward acceleration of q/7. When the block has fallen a distance d = 4.5 m, find the work done by the cord's force on the block. Submit Answer Tries 0/5 Find the work done by the weight of the block. Submit Answer Tries 0/5 Find the kinetic energy of the block. Submit Answer Tries 0/5 Find the speed of the block. Submit Answer Tries 0/5
A 3.8-kg block is pushed 2.1 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 8 = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following. (a) the work done by F Ⓡ (b) the work done by the force of gravity J (c) the work done by the normal force between block and wall J (d) By how much does the gravitational potential energy increase during the block's motion? J
Two blocks are connected by a very light string passing over a massless and frictionless pulley (Figure 1). Traveling at constant speed, the 20.0 N block moves 95.0 cm to the right and the 12.0 N block moves 95.0 cm downward. Figure 20.0 N 1 of 1 12.0 N Part A During this process, how much work is done on the 12.0 N block by gravity? Express your answer with the appropriate units. Ww, 12.0 N = Submit Part B Value WT, 12.0 N = Request Answer During this process, how much work is done on the 12.0 N block by the tension in the string? Express your answer with the appropriate units. Value Units Submit Request Answer ? Units ?
Can the work done by Friction be zero? In a case where static friction exists, the object does not move and the change in kinetic energy is also zero? W = Fd = ?KE = 0? What did I do wrong?