Answers

2015-10-19T07:44:43+05:30
Since , P = W/t

w = FS where S is the length

ATQ

P = 4N × 2m / (s/2)

P = 16Nm/s

so , the power will increase by a factor of 16
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2015-10-19T19:52:07+05:30
Power=Workdone/time
Here,
Work done= F*S where F= force applied and S =distance traveled.
Now,
F₁=4F
S₁=2S
T₁=T/2
P=4F*2S/(T/2)
P=16F*S/T
P₁=16P
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