W = Fd = mgh = (5000kg)(9.81ms?)(30m)=1471500J
W 1471500J
P=-=
t 120s
P = 12262.5Watt
=12262.5 Watt
Answer
ASSIGNMENT 4.1
What is the power of an airplane of mass 3 000 kg if when on the runway it is
capable of reaching a speed of 80 ms from rest in 4.0 s?
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Answer:
24×10^5 W
Explanation:
P = 1/2 mv^2 /t
= 3000 ×80×80/4×2
= 24×10^5 W
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