Mechanical Advantage

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

if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?

• 120 N
• 5 N
• 2000 N
• 80 N

The amount by which a machine multiplies input force is known as the 

• work.
• power.
• output force.
• mechanical advantage.

All simple machines help make work _________.

• harder
• smaller
• lighter
• easier

Tags

NGSS.MS-PS2-1

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-ETS1-2

The mechanical advantage of this inclined plane is...(MA=Resistance Force/Effort Force)

• 2.4

• 3.4

• 4.4

In this illustration,

• the machine is decreasing mechanical advantage
• the machine is increasing mechanical advantage
• mechanical advantage is not changed

Tags

NGSS.MS-PS2-2

What is the ideal mechanical advantage of the following pulley?

• 1

• 2

• 4

• 6

What is the ideal mechanical advantage of the following pulley?

• 1

• 2

• 4

• 6

A mover uses a ramp to pull a 1000-newton cart up to the floor of his truck (0.8 meters high). If it takes a force of 200 newtons to pull the cart, what is the length of the ramp?

• 10

• 5

• 200

• 500

Tags

NGSS.MS-PS2-2