Assertion For looping a vertical loop of radius, r the minimum velocity at lowest point should be √5 g r. Reason In this event the velocity at the highest point will be zero.

Question

Assertion For looping a vertical loop of radius, r the minimum velocity at lowest point should be √5 g r. Reason In this event the velocity at the highest point will be zero. (A) Both assertion and reason are true and reason is the correct explanation of assertion (B) Both assertion and reason are true but reason is not the correct explanation of assertion (C) Assertion is true but reason is false. (D) Both assertion and reason are false.

Tardigrade Admin · Accepted Answer

At the lowest point of a vertical circle, the minimum velocity at the bottom u min =√5 g r At u=√5 g r Velocity at highest point v=√g r

Q. Assertion For looping a vertical loop of radius, $r$ the minimum velocity at lowest point should be $5 g r$ .
Reason In this event the velocity at the highest point will be zero.

Both assertion and reason are true and reason is the correct explanation of assertion

Both assertion and reason are true but reason is not the correct explanation of assertion

Assertion is true but reason is false.

Both assertion and reason are false.

At the lowest point of a vertical circle, the minimum velocity at the bottom
$u_{m i n} = 5 g r$
At $u = 5 g r$
Velocity at highest point $v = g r$

Q. Assertion For looping a vertical loop of radius, r the minimum velocity at lowest point should be 5gr​. Reason In this event the velocity at the highest point will be zero.