Ideal Mechanical Advantage and Mechanical Advantage

Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?

• 1

• 10

• 100

• 1000

Tags

NGSS.MS-PS2-1

What is the mechanical advantage of the block and tackle used to lift the bale of cotton?

• 1

• 2

• 3

• 4

A lever and fulcrum are used to lift a fallen tree, which has a weight of 480 N. If the lever has a mechanical advantage of 5.5, what is the input force that will begin lifting the tree off the ground?

• 5.5 N

• 40.7 N

• 87.3 N

• 2640 N

Tags

NGSS.MS-PS2-2

This 2000 N weight is raised 1 meter by pulling 4 meters of rope. What force was required to pull the rope?

• 500 N

• 1000 N

• 2000 N

• 8000 N

Tags

NGSS.MS-PS2-2

This pulley

• has a mechanical advantage of 1 and does not make work easier.

• has mechanical advantage of 2 and reduces the force needed to lift an object.

• has a mechanical advantage of 2 and changes the direction of the applied force.

• has a mechanical advantage of 1 and changes the direction of the force needed to lift an object.

Tags

NGSS.MS-ETS1-2

In this illustration,

• the machine is decreasing mechanical advantage

• the machine is increasing mechanical advantage

• mechanical advantage is not changed

Which of the following is true for the picture?

• elephant is the fulcrum, mouse is the effort, triangle is the load

• mouse is the fulcrum, triangle is the effort, elephant is the load

• triangle is the fulcrum, mouse is the effort, elephant is the load

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

Suppose Padma uses a hammer to pull a nail. If she moves the handle of the hammer 30 cm and the nail moves 5.0 cm, what is the ideal mechanical advantage of the hammer?

• 2

• 6

Tags

NGSS.MS-ETS1-1

Match the phrase with the correct term:
The amount that a machine can change an input force is called:

• mechanical advantage

• output force

• input force

• machine