Question

Statement I: Work done by the force of friction in moving a body around a closed loop is zero
Statement II: Work done does not depend upon the nature of force.

• A. If both statement I and statement II are true and statement II is the correct explanation of statement I.
• B. If both statement I and statement II are true but statement II is not the correct explanation of statement I.
• C. If statement I is true but statement II is false.
• D. If both statement I and statement II are false.

Answer 1

Answer: (D)

Work done during the motion of a body over a closed path depends upon whether the force doing work is conservative or non-conservative in nature. For conservative forces like gravitational forces like frictional force some work is done.