Question

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:

• A. take a time longer than $T$ to slide down the wedge
• B. take a time shorter than $T$ to slide down the wedge.
• C. remain at the top of the wedge
• D. jump off the wedge

Answer 1

The correct option is C remain at the top of the wedge

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.