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PhysicsNEET 2022Power and vertical circular motion

Work, Energy and Power

An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of 1.5 m s−11.5\ \mathrm{m\,s^{-1}}. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is (g=10 m s−2g = 10\ \mathrm{m\,s^{-2}}):

  1. A.23500
  2. B.23000
  3. C.20000
  4. D.34500✓

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