An elevator (1500 kg mass, with passengers) is attached to a 1000 kg counterweight by a cable that is wrapped over a pulley. It is also attached (by a second cable) to a motor. The elevator is moving down at a constant speed of 5 m/s.

a) Determine the force that the motor must apply to the second cable.

b) Determine the force that the motor must exert to lower the elevator with a constant downward acceleration of 1 m/s^2.

c) Determine the Force that the motor must exert to lower the elvator with a constant upward acceleration of 1 m/s^2.

d) Draw a graph of the acceleration of the elevator as a function of the force exerted by the motor. Fill in imoprtant numbers on each axis.

Answer rating: 100% (QA)

Given M 1500 kg Mc 1000 kg v 5 ms downwards a Let force in the second cable be F Let tension in the ... View the full answer