PRACTICE FOR MIDTERM

What simple machine can be used to split things apart and also it can hold open a door?

• Lever

• Pulley

• Wedge

• Screw

which lever type is a wheel barrow?

• type 1

• type 2

• type 3

• none of them

what splits things apart?

• lever

• wedge

• wheel and axle

• screw

Which would be most effective to push a heavy box into a truck?

• super cow

• inclined plane

• wedge

• pulley

The 3 parts of a lever are:

• fulcrum, effort, and load

• load, output, and input

• input, effort, and fulcrum

• pivot, output, and fulcrum

A device that helps us do work andand that has only one input is known as a:

• simple machine

• wheel and axle

• mechanical advantage

• really?

To increase the mechanical advantage of a lever

• make sure the fulcrum is in the middle of the lever
• move the fulcrum closer to the load
• move the fulcrum closer to the effort
• use a bigger fulcrum

To increase the mechanical advantage of a lever

• make sure the fulcrum is in the middle of the lever
• move the fulcrum closer to the load
• move the fulcrum closer to the effort
• use a bigger fulcrum

Which of these is included in the simple plane "inclined plane" choose 3 from 5

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which of these is a simple plane "Lever level 1"?

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