Question

Plz help ASAP will mark brainliest for the correct answer

Answer 1

Answer:

It takes 534.54 watts

Step-by-step explanation:

Given :

Mass of the book = 30kg

Distance  = 10m

Time  =  5.5 sec

To Find:

How much power did it take = ?

Solution:

Step 1:  calculate the work done

Work done  = $m\times a \times d$

where

m =  mass

a = acceleration due to gravity

d =  distance

Substituting the values,

Work done  = $30\times 9.8 \times 10$

=> 2940 Nm

Step 2:  calculate the Power

We know that

$Power = \frac{\text{ work done}}{time}$

Substituting the values,

$Power = \frac{2940}{5.5}$

Power = 534.54 watts