Q.
If $W_{1},W_{2}$ and $W_{3}$ represent the work done in moving a particle from $A$ to $B$ along three different paths 1,2 and 3 respectively (as shown) in a gravitational field of point mass $m$, then
A) $W_{1} = W_{2} = W_{3}$
B) $W_{1} > W_{2} > W_{3}$
C) $W_{1} > W_{2} < W_{3}$
D) $W_{1} < W_{3} < W_{2}$
Explanation
(a) Since the gravitational field is conservative field, hence, the work done in taking a particle from one point to another in a gravitational field is path independent
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.