What is effort (input) force?

• the force one exerts on a machine

• the force which an effort force must overcome in order to do work on an object via a simple machine.

• the force the machine exerts on a object

• the output work times the input distance

What is resistance (output) force?

• the force required by a machine in order to accomplish work (the force you put on the machine)

• The force that is exerted by a machine

• the force the machine exerts on a object

• the output work times the input distance

What is effort (input) distance?

• the force required by a machine in order to accomplish work (the force you put on the machine)

• the force which an effort force must overcome in order to do work on an object via a simple machine.

• the distance an input force acts through

• the output work times the input distance

What is resistance (output) distance?

• the force required by a machine in order to accomplish work (the force you put on the machine)

• the force which an effort force must overcome in order to do work on an object via a simple machine.

• the distance an input force moves a machine

• the distance through which the output force is exerted

What is mechanical advantage?

• The advantage a machine has over a bicycle

• A measure of how much a simple machine reduces work

• A measure of when is the best time to use a simple machine

• the number of times a machine increases input force

Tags

NGSS.MS-PS2-2

What is the equation for mechanical advantage?

• MA=input force*output force
• MA=output force/input force
• MA=input force/output force
• MA= output force - input force

A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?

• 1

• 2.5

• 5

• 10

What is the mechanical advantage of a lever that has an input arm of 3 meters and an output arm of 2 meters?

• 1.5

• 1

• 0.67

• 3

A lever with an output arm of 0.8 meter has a mechanical advantage of 6. What is the length of the input arm?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS2-2

A 5-meter ramp lifts objects to a height of 0.75 meters. What is the mechanical advantage of the ramp?

• 6.67

• 5.67

• 5

• 6

Tags

NGSS.MS-PS2-1