Mrs. Love's Simple Machines and Mechanical Advantage

Which choice is an example of an inclined plane?

• A ramp

• Seesaw

• Bottle Cap

• Ferris Wheel 

What type of simple machine would you find on the bottom of a car?

• Inclined Plane

• Pulley

• Wheel and Axle

• Wedge

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

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

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If a pulley system has a mechanical advantage of 4, what does that mean?

• This means that it is 4 times easier to lift this load.

• This means you only need a quarter of the effort to lift the load.

• For example, if you lifted 100 kg, it would only take 25 kg of effort.

• All of the above

What is the mechanical advantage of the lever ?

• 0.5

• 2

• 3

• 6

Jeff is a landscaping contractor and lifts a rock weighing 600 Newtons by wedging a board under the rock. Jeff weighs 150 Newtons and puts all of his weight on the lever. How much mechanical advantage did the lever provide to Jeff in lifting the rock?

• 0

• 2

• 4

• 0.25

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A lever type 1 with a length of 1.2 meters has an input arm length of 80 cm are used to lift a fallen tree, which has a weight of 480 N.

What is the input force that will begin lifting the tree off the ground?

• 32,000 N

• 320 N

• 240 N

• 960 N

A 10 Newton effort force is required to lift a 10 kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever? [The fulcrum is placed 0.5m from the box.]

• 0.5 N

• 2.0 N

• 5.0 N

• 8.0 N

Tags

NGSS.MS-PS2-2

Which gear train would you use to apply the force necessary to ride up a hill?

• A

• B

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