A)
B)
C)
D)
Correct Answer: A
Solution :
Since the block rises to the same heights in all thefour cases, from conservation of energy, speed ofthe block at highest point will be same in all fourcases. Say it is \[{{v}_{0}}.\]Equation of motion will be \[N+mg=\frac{mv_{0}^{2}}{R}\] or \[N=\frac{mv_{0}^{2}}{R}-mg\] R (the radius of curvature) in first case isminimum. Therefore, normal reaction N willbe maximum in first case.You need to login to perform this action.
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