Physics Worksheet - Work, Power and Simple Machines

The following picture that shows the principal of wheel and axle is ...

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• 
• 
• 

The object that is in the screw category is....

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• 
• 
• 

The second class (type 2) of lever is shown by the picture…

• (A)

• (B)

• (C)

• (D)

Mechanical advantage (MA) is comparison between ...

• load and effort

• effort and load

• weight and mass

• mass and effort

If the work done by the car is 20 kJ, how much force exerted by the car to go from A to B?

• 45,000 N

• 4000 N

• 800 N

• 200 N

These are the components of a lever, except...

• Pivot

• Force

• Load

• Axle

Look at the picture of pulley. Mechanical Advantage of the system is…

• 4

• 3

• 2

• 1

The incorrect statement about the characteristics of simple machines is…

• It has mechanical advantage

• wedge composed from 2 incline plane

• Mechanical advantage connected with load without effort

• Consists of lever, incline plane, pulley, axel and wheel, screw, wedge

What is the mechanical advantage of the house ladder in the picture above?

• 12

• 32

• 2

• 1/2

If it takes 25 N to slide the box up the ramp, how much work will it take to slide the box up?

• 125 J

• 500 J

• 200 J

• 62.5 J