A block of mass m = 3.20 kg is pushed a distance d = 7.80 m along a frictionless

Question

A block of mass m = 3.20 kg is pushed a distance d = 7.80 m along a frictionless, horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle 6 = 22.0 degree below the horizontal as shown in the figure below. Determine the work done on the block by the applied force. Determine the work done on the block by the normal force exerted by the table. I Determine the work done on the block by the gravitational force. Determine the work done by the net force on the block. The system shown in the figure below consists of a light, inextensible cord, light, frictionless pulleys, and blocks of equal mass. Notice that block B is attached to one of the pulleys The system is initially held at rest so that the blocks are at the same height above the ground. The blocks are then released. Find the speed of block A at the moment the vertical separation of the blocks is h. (Use any variable or symbol stated above along with the following as necessary: g.)

Explanation / Answer

a) 115.71 J

b) zero

c) zero

d) 115.71   J

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VELOCITY   ====   6h

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