A double-threaded power screw is used to raise a load of 5 kN. The nominal diameter is 60 mm and pitch is 9 mm. The threads are Acme type (2 0.15. Neglect collar friction, calculate : (a) the torque required to raise the load (b) the torque required to lower the load (c) the efficiency of the screw for lifting load

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Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.