A winch is driven by an electric motor with a separate excitation and fed from a battery of emf `E =
Channel: Doubtnut
Date: 30/08/2020

A winch is driven by an electric motor with a separate excitation and fed from a battery of emf `E = 300 V`. The rope and the hook of the winch rise at a velocity `v_(1) = 4 m//s` without a load and at a velocity `v_(2) = 1 m//s` with a load of mass `m = 10 kg`. img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/SSK_ATP_PHY_C03_E01_057_Q01.png" width="80%" Determine the velocity `v'` of the load and its mass `m'` for which the winch has the maximum power, neglecting the mass of the rope and the hook.