There is a pulley arrangement with a worker standing on a raised platform. The worker is standing on a platform 4 m above the floor. How many meters of rope must he pull through his hands to raise the block from the floor to his position?

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.

The material that keeps its new shape after it is stretched is called?

Name two kinds of practical electric pumps.