What is the overall gear ratio of the following gear train?(Gear A {input} has 20 teeth, B has 35 teeth, C has 45 teeth, and D {output} has 80 teeth)

A block and tackle system with 3 supporting strands is used to lift a large metal plate in a automotive factory. What is the effort force of the motor needed to lift a 90 lb plate?

Given a second class lever with a distance of 5′ from the fulcrum to the effort and a distance of 33″ from the resistance to the fulcrum, what is the maximum amount of weight that can be lifted with 2

Suppose a wheel with an 8.5 diameter is used to turn a water valve stem with a diameter of .65 inches. What is the mechanical advantage?

A fixed pulley system has 4 strands with only 3 supporting. How many pounds of effort would be needed to lift a 600 lb weight?

Consider an axle used to drive the wheels of a car. The wheel radius is 11.25 inches, while the axle radius is 1.25 inches. What is the mechanical advantage?

The wheel on your bicycle has a 14 inch radius, what is the linear distance it would travel in 3 revolutions?

What is the mechanical advantage of a 1/4-20 UNC x 2″ bolt?

An inclined plane has a mechanical advantage of 10. If an effort of 20 pounds is needed to push a wheelchair up the inclined plane. What is the weight of the wheelchair?

What is the protocol Data Unit at the Network layer of the OSI model?