Question

A brass ball is suspended by a strong cotton thread is not moving. On the brass ball:

Options

• its weight (mg) acts vertically downward.

• the tension (T) in the thread acts vertically upward.

• the weight (mg) is equal to the tension T.

• All of these

Answer 1

All of these

Explanation:

The ball is at rest, so the upward tension balances its downward weight. Therefore, both forces act on the ball and have equal magnitudes.