A pulley system consits of two fixed pulleys and two movable pullys that lift a load that has a weight of 300 N. If the effort force used to lift the load is 100 N, What is the mechnaical advantage of the system?
The diagram shows a box being pulled by a rope with a force of 200N along a horizontal suface. The angle the rope makes with the horizontal is 45o. Calculate the work doen on the box and the power required to pull it a distance of 5.0 m in 10s.
because there is very little friction,
the lever is an extremely efficient simple
machine. Using a 90.0-percent-efficient
lever, what input work is required to lift an
18.0-kg mass through a distance of 0.50 m?
The ramp in Figure 10-23 is 18 m long and 4.5 m high
What force, parallel to the ramp (FA), is
required to slide a 25-kg box at constant
speed to the top of the ramp if friction