Mechanical Advantage Quiz

What is mechanical advantage?

• The ratio of output force to input force

• The ratio of input force to output force

• The distance over which the input force is applied

• The force required to lift a load

If an output force is five times larger than an input force, what is the mechanical advantage?

• 1

• 2

• 5

• 3

What is the actual mechanical advantage of a lever if the input force is measured as 37 N and the output force is measured as 185 N?

• 4

• 3

• 2

• 5

Why is a class 3 lever considered useful even though its mechanical advantage is less than 1?

• It is more stable than other levers

• It is easier to lift heavy loads

• It increases the distance and speed of the output

• It requires less effort to use

What parts of a pulley system will cause the actual mechanical advantage to be less than the ideal mechanical advantage?

• The weight of the load

• Friction, slippage, and distortion

• The number of pulleys used

• The length of the string

What is the mechanical advantage of a wheelbarrow with an effort arm that is 1.8 m long and a load arm that is 0.50 m long?

• 2

• 3

• 5

• 4

What is the mechanical advantage of a pulley system if 4 m of string had to be pulled to lift a load to a height of 1 m?

• 1

• 4

• 2

• 3

What is the ideal mechanical advantage of a machine if all of the input force is converted into output force?

• 3

• 4

• 2

• 1

To lift a load 5 cm with a pulley system, 15 cm of string had to be pulled. What is the mechanical advantage?

• 1

• 2

• 4

• 3

What is the actual mechanical advantage of a lever if the input force is measured as 25 N and the output force is measured as 250 N?

• 5

• 15

• 8

• 10