Question

Using energy conservation,derive the expressions for the minimum speed at different location along a vertical circular motion controlled by gravity?

Solve step by step.
Only genius mind students will solve this question..​

Answer 1

Answer:

By using the energy conservation,

the critical or minimum speeds will be expressed as vcritical = √rg. At this point, the tension or normal force becomes zero at different locations along with the circular motion that is controlled by the gravity .

This is the correct answer of your question .

Answer 2

Explanation:

This requires that the particle must have some minimum speed. At the top (point A): Let v1 be the speed of the particle and T1 the tension in the string. Here, both T → 1 and weight is vertically downward. Hence, the net force on the particle towards the centre O is T1 + mg, which is the necessary centripetal force.