Mechanical Advantage and Efficiency

A machine's ______ is the number of times the machine multiplies the input force.

• mechanical advantage

• efficiency

• output force

• effectiveness

The force you exert on a machine

• mechanical advantage

• efficiency

• output force

• input force

Tags

NGSS.MS-PS2-2

A device that make work easier

• Machine

• Appliance

• Automobile

• Tool

The mechanical advantage without friction

• Ideal mechanical advantage

• Actual mechanical advantage

• Real mechanical advtange

• Total mechanical advantage

Tags

NGSS.HS-PS2-3

The mechanical advantage the machine provides in a real situation

• Ideal mechanical advantage

• Actual mechanical advantage

• Real mechanical advtange

• Total mechanical advantage

The _____ of a machine compares the output work to the input work and expressed as a percent.

• mechanical advantage

• efficiency

• output force

• effectiveness

The force exerted by the machine

• mechanical advantage

• efficiency

• output force

• input force

Work is done when

• a force acts on an object.

• a force acts on an object and the object moves in the same direction.

• the mass of an object changes.

• the velocity of an object changes.

True or False: Work can be done on an object without motion .

• True

• False

When work is done, and object must move in the _________ direction as the force applied.

• same

• opposite

• perpendicular

Tags

NGSS.MS-PS2-2