OR
2,3) Swarali takes 40sec to carry a bag weighing 20kg to a height of 5 meter. How much
power has she used?
Answers
Answered by
1
Answer:
Power used by Swarali is 24.5 W.
Explanation:
Given:
m = 20 kg
h = 5 m
t = 40 s
To find:
We have to find power used by Swarali to carry bag.
Force applied by Swarali,
F = mg = 20 * 9.8
F = 196 N
Work done by Swarali to carry the bag to a height of 5 m,
W = F s = 196 * 5 = 980 J
By using the formula of Power,
Power = work / time
Power = 980/20
Power = 24.5 W
Therefore, Power used by Swarali is 24.5 W.
Similar questions