Question

A man carrying a bucket of water, walking on a level road with a uniform velocity does no work.

• A. True
• B. False

Answer 1

The correct option is A True

Explanation

According to the question;

1. A man carrying a bucket of water, walking on a level road with a uniform velocity.
2. Here the force is acting vertically on the bucket of water and it is displaced horizontally along the road.
3. therefore, force $\text{'}F\text{'}$is acting perpendicularly to the displacement $\text{'}s\text{'}$
4. As we know,

$W=FsCos\theta$

Here, $\theta$ is $90°$

Then,

$$\begin{gathered} W=FsCos0° \\ \therefore Cos0°=0 \\ \because W=0 \end{gathered}$$

Hence, this statement is true.