An elevator which can carry a maximum load of 1800 kg (elevator + passengers) is moving up with a
constant speed of 2 ms – 1
. The frictional force opposing the motion is 4000 N. Determine the minimum
power delivered by the motor to the elevator in watt and in horsepower.
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Given, the maximum load the elevator can carry isML=1800kg. We know that frictional force always opposes relative motion. So, when the elevator is moving up the frictional force is in downward direction.
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