Question

A man does 60 J of work in 6 seconds. Calculate the power.

Answer 1

Answer:

10 watts

Explanation:

Power=

time

Work

=

6s

60J

∴Power=10watts.

Answer 2

Answer:

The required power is 10 W

Explanation:

Given :

A man does 60 J of work in 6 seconds.

To find :

the power

Solution :

• Power is the rate at which work is done.

• It is calculated by dividing the amount of work done by time taken to the work.
• The S.I unit of power is Watt (W)

Work done, W = 60 J

time taken, t = 6 seconds

Power, P = ?

$\boxed{\longrightarrow \sf P=\dfrac{W}{t}}$

where

W is the amount of work done in J

t is the time taken in sec

P is the power in Watt

Substituting,

P = 60/6

P = 10 W

Therefore, the required power is 10 W