A) -0.5 J
B) -1.25 J
C) 1.25 J
D) 0.5 J
Correct Answer: B
Solution :
The height (h) measured by particle while goes up is \[w=w\left( 1-\frac{h}{R} \right)\] Work done by gravity force \[h=\frac{R}{2},\,w=500N\] \[\therefore \] [Angle between force and displacement is \[w=500\left( 1-\frac{1}{2} \right)\]] \[=\frac{500}{2}=250N\] \[g=g\left( 1-\frac{2h}{R} \right).\]You need to login to perform this action.
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