What constant speed does the crane lift

Assignment Help Physics

Reference no: EM13674033

A motor having an efficiency of 88% operates a crane having an efficiency of 42%. With what constant speed does the crane lift a 410-kg crate of machine parts if the power supplied to the motor is 5.5 kW?

Reference no: EM13674033

Questions Cloud

How much work does the escalator do on sau-lan : Sau-Lan has a mass of 52 kg. She rides the up escalator at Ocean Park in Hong Kong. This is the world’s longest escalator, by a length of 227 m and an average inclination of 31°. How much work does the escalator do on Sau-Lan?

Angle between the acceleration vector and velocity vector : A particle moves in an elliptical path given by the equation r = bcos(omega)ti + 2bsin(omega)tj . Discover the angle between the acceleration vector and the velocity vector at time t = p/(4(omega)).

What is the skiers speed at the top of the next hill : A skier starts from rest at the top of a 45-m hill, skis down a 30° incline into a valley, and continues up a 40-m-high hill. Both hill heights are gauged from the valley floor. Suppose that you can neglect friction and the effect of ski poles

Bullets canot penetrate supermans chest : Bullets can’t penetrate Superman’s chest. Assume that Superman, with mass 104 kg, while not moving, is struck by a 4.20-g bullet moving with a speed of 835 m/s. The bullet drops straight down with no horizontal velocity.

What constant speed does the crane lift : A motor having an efficiency of 88% operates a crane having an efficiency of 42%. With what constant speed does the crane lift a 410-kg crate of machine parts if the power supplied to the motor is 5.5 kW?

How much force does the the rope exert on the crate : Sally expends 11 400 J of energy to drag a wooden crate 25.0 m across a floor with a constant speed. The rope makes an angle of 48.0° with the horizontal. How much force does the the rope exert on the crate?

What is the efficiency of the machine : A mover’s dolly is used to transport a refrigerator up a ramp into a house. The refrigerator has a mass of 115 kg. The ramp is 2.10 m long and rises 0.850 m. The mover pulls the dolly by a force of 496 N up the ramp. The ramp and dolly constitute a m..

Decide the power of the conveyor : A 12.0-m long conveyor belt, inclined at 30.0°, is utilized to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has a mass of 1.0 kg, and there are 25 newspapers per bundle. Deci..

Required to slide the crate up ramp at constant speed : Rico slides a 60-kilogram crate up an inclined ramp 2.0-m long onto a platform 1.0 m above floor level. A 400-N force, parallel to the ramp, is required to slide the crate up the ramp at a constant speed.

User Account

All Pages