Question

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4. Using the energy conservation, derive
the expressions for the minimum speeds
at different locations along a vertical
circular motion controlled by gravity.
Is zero speed possible at the uppermost
point? Under what condition/s? Also
prove that the difference between the
extreme tensions (or normal forces)
depends only upon the weight of the
object. in brief​

Answer 1

Explanation:

Yes, at the uppermost point, the zero speed is possible in the trajectory. The vertical velocity becomes zero under the conditions, where velocity direction completely stays horizontal and the acceleration remains downwards because of the gravity. Hence, the angle we get is called π/2.

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