A body of mass 0.3 kg is taken up an inclined plane to length 10 m and height 5 m, and then allowed to slide down to bottom again, then match the items of Column I with the respective items in Column II. (Given, 
)
Column I | Column II |
A. Work done by gravitational force over the round trip | I. 18.5 J |
B. Work done by the applied force over upward journey | II. 10.9 |
C. Work done by frictional force over round trip | III. 0 |
D. Kinetic energy of the body at the end of trip. | IV. -7.6 J |
Choose the correct answer from the options given below
Text Solution
Verified by ExpertsC
A. As we know gravitational force is conservative. So, work done by it in round trip is zero.
B. Force needed to move the body up,
C. Work done by frictional force over round trip,
D. KE of the body at end of trip = Work done by the net force in moving down the plane
Hence, A-III, B-I, C-IV, D-II
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