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songoku
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Homework Statement
A winch is used to raise a 200 kg load. The maximum power of the winch is 5 kW. Calculate the greatest possible acceleration of the load when its speed is 2 ms-1, and the greatest speed at which the load can be raised.
Homework Equations
W = F.d
W = ΔKE
P = F.v
P = W/t
KE = 1/2 mv2
The Attempt at a Solution
Assume the initial speed = 0 m/s:
W = ΔKE = 0.5 x 200 x 4 = 400 J
Then do not know what to do...
The answer should be 0.2 ms-2 and 2.55 ms-1
Thanks