Question

A man rowing a boat up stream is at rest with respect to the shore, is doing no work.

• A. True
• B. False

Answer 1

The correct option is A True

Explanation

1. Yes, it is true
2. Because the boat is doing work against the river current but no work is done by boat against the shore as the displacement is zero with respect to shore.
3. $$\begin{gathered} W=FsCos\theta \\ \therefore s=0 \\ W=0 \end{gathered}$$
4. Therefore, the work done is zero.

Hence, this statement is true.