Single Choice

A smooth wedge $$A$$ is fitted in a chamber hanging from a fixed ceiling near the earth's surface. A block B placed at the top of the wedge takes a time $$T$$ to slide down the length of the wedge and the cable supporting the chamber is broken at the same instant, the block will:

Atake a time longer than $$T$$ to slide down the wedge
Btake a time shorter than $$T$$ to slide down the wedge.
Cremain at the top of the wedge
Correct Answer
Djump off the wedge

Solution

When the cable is broken, the wedge along with the chamber executes a free fall. So, there is no relative motion between the block and the wedge. So, it will remain at rest at the top of the wedge.

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