4-1.Newton's Laws of Motion
medium

A person used force $(F)$, shown in the figure to move a load with a constant velocity on a given surface Identify the correct surface profile

A
B
C
D
(AIIMS-2006)

Solution

In figure no. $(a)$ and $(c)$, a constant force equal to mg sinq is required. After reaching the highest point, in case of figure $(c)$, no force is required but in case of figure $(a)$, body travels on its own. So a $-ve$ force is acting on the body. In this way, figure $(a)$ represents the given $F -x$ curve.
Standard 11
Physics

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