Question

Solved
Example 1 : Swaralee takes 20 s to carry
a bag weighing 20 kg to a height of 5 m.
How much power has she used?​

Answer 1

Answer:

50 W

Explanation:

Given:

Time = 20 s

Mass = 20 kg

Height = 5 m

First we'll find the work done

so work done = Force x displacement

(20 x 10) x 5 ( 10 is acceleration due to gravity)

1000 J

Now we'll find the power used

so power used = work/time

1000/20

50 W

Hope it helps.......

Good day