A crane can lift 5000 kg mass to the height 10m in 10 sec. What is its power?
Answers
Answered by
3
Answer:
49kw
Explanation:
Power = Work/Time
In this case the work is equal to the change in gravitational potential energy, mgh.
W = mgh = (5000 kg)(9.8m/s^2)(10m) = 490000 J
The time is 10 seconds, so
Power = W/T = 490000J / 10s = 49000 J/s = 49000 W = 49 kW
Answered by
5
it's your ans-
given,
mass = 5000 kg
distance = height = 10 m
time = 10 sec
by formula,
force = mg ( g = 9.8 or 10 )
= 5000 * 10
= 50000 N
Work = force * displacement
= 50000 * 10
= 500000 J
Power = work / time
= 500000 / 10
= 50000 Watt
pls pls mark brainlist...
Similar questions