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What is a machine?

A device that reduces the amount of force required to do work.

A device that does not require force to work.

A device that helps in doing work by transmitting or transforming energy.

A device that changes the direction of the applied force.

What is the Mechanical Advantage (MA) of a machine?

The ratio of the input force to the output force.

The ratio of the output force to the input force.

The ratio of the distance moved by the load to the distance moved by the effort.

The ratio of the velocity output to the velocity input.

What is the definition of Velocity Ratio (VR) in a machine?

The ratio of the output force to the input force.

The ratio of the distance moved by the load to the distance moved by the effort.

The ratio of the input force to the output force.

The ratio of the effort distance to the load distance.

In a machine with a mechanical advantage (MA) of 4 and a velocity ratio (VR) of 5, what is the efficiency?

50%.

60%.

100%.

80%.

In which situation would an inclined plane be most beneficial?

Changing the direction of a force.

Reducing the amount of force required to lift a heavy load.

Increasing the speed of a moving object.

Lifting a heavy load directly.