swaralee takes 20s to carry a bag weighing 20kg to a height of 5m. how much power has she used?
Answers
Answered by
6
Answer:
Given :
m=20kg ,h=5m ,t=40s
the force which has to be applied by swaralee,
F=mg=20*9.8
F=196N
work done by swaralee to carry the bag to a height of 5m,
W=F s= 196*5=980 J
power =(p) = work /t =980/40
p= 24.5W
Answered by
13
Answer: Power used by Swaralee is 24.5 W.
Explanation:
Given:
m = 20 kg
h = 5 m
t = 40 s
To find: We have to find power used by Swaralee to carry bag.
Force applied by Swaralee,
F = mg = 20 * 9.8
F = 196 N
Work done by Swaralee 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 Swaralee is 24.5 W.
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