A 100 g object is moving in a vertical circle. At the TOP of the loop,…

Question

A 100 g object is moving in a vertical circle. At the TOP of the loop, for minimum speed (string just slack), v_min equals:

Accepted Answer

A. √(rg)

At top of vertical loop, minimum speed when gravity alone provides centripetal force: mg = mv²/r → v_min = √(rg).
Below this, the string goes slack and circular motion breaks.

Answer

√(2rg)

Answer

√(rg/2)

Answer

Zero

A 100 g object is moving in a vertical circle. At the TOP of the loop, for minimum speed (string just slack), v_min equals:

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