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2. A man pushes a box with a constant horizontal force. The mass of the box is 150 kg, the coefficient of kinetic friction between the box and the floor is 0.25, and the box moves with constant velocity on a level surface through a distance of 25 m.
a. What is the acceleration of the box?
b. What is the net force applied to the box?
c. Draw a free body diagram and write Newton's laws for the box?
d. Find the magnitude of the force applied by the man?
e. Find the work done by the man?
f. Find the work done by the frictional force?
g. Find the work done by the normal reaction?
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Two objects of masses 10.0 kg and 5.00 kg are connected by a light string that passes over a frictionless pulley as in figure P4.20. The 5.00 kg object lies on a smooth incline of angle 40 degrees. Find out the acceleration of the 5.00 kg object ..
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