Simple Machines Question Preview (ID: 12688)


Review Of Simple Machines And Mechanical Advantage. TEACHERS: click here for quick copy question ID numbers.

How could you increase the mechanical advantage of a lever?
a) make the weight lighter
b) make the weight heavier
c) move the fulcrum closer to the weight
d) move the fulcrum farther from the weight

What is the mechanical advantage of a lever with an input arm of 100 cm and an output arm of 50 cm
a) 500
b) 1500
c) 0.5
d) 2

How can you increase the mechanical advantage of a plane?
a) make the height taller
b) make the plane longer
c) decrease the weight
d) increase the weight

What simple machines are used in a wheel barrow?
a) inclined plane, lever
b) wheel, lever
c) pulley, inclined plane
d) lever, pulley

A simple machine is used to lift a weight. What happens to he amount of work that must be done compared to doing the work without the machine?
a) it increases
b) it depends on which simple machine is used
c) it stays the same
d) it decreases

A simple machine is used to lift a weight. What happens to the amount of distance the force is exerted over if a machine is used?
a) it increases
b) it can\'t be predicted
c) it stays the same
d) it decreases

Which one of the following simple machines is a third class lever?
a) Bumper Jack
b) Wheel barrow
c) Fishing Pole
d) Crowbar

Which of the following is an example of a first class lever?
a) A wheel barrow
b) A ramp
c) A seesaw
d) A broom

A ramp is used to push a piano up three stairs. The height that it is being pushed up is 2 feet and the length of the ramp is 8 feet. What is the mechanical advantage of the ramp
a) 4
b) 0.25
c) 16
d) 2

What is the general formula for all simple machines and mechanical advantage?
a) Force out divided by force in
b) Force in multiplied by force out
c) Force out multiplied by force in
d) Force in divided by force out

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