Simple Machines Quiz

What is the formula to calculate work done by a force?

Which of the following is NOT a type of simple machine?

• Lever

• Pulley

• Battery

• Inclined Plane

What is the mechanical advantage of a machine that requires an input force of 50 N to overcome an output force of 200 N?

• 0.25

• 2

• 4

• 10

Which simple machine is characterized by a flat surface tilted at an angle to help lift or move loads?

• Lever

• Wheel and Axle

• Inclined Plane

• Screw

What is the unit of work in the International System of Units (SI)?

• Newton (N)

• Joule (J)

• Watt (W)

• Pascal (Pa)

If you apply a force of 20 N to push a box for a distance of 5 m, how much work have you done?

• 4 J

• 25 J

• 100 J

• 10 J

Which of the following simple machines consists of a wheel with a rope or cable wrapped around it?

• Lever

• Pulley

• Wedge

• Screw

What is the mechanical advantage of a lever with an effort arm of 4 meters and a load arm of 2 meters?

• 0.5

• 1

• 2

• 4

In which situation is no work done according to the physical definition of work?

• Pushing a wall with all your might but it doesn't move

• Lifting a book off the floor

• Dragging a sled across the snow

• Climbing up a ladder

What does the efficiency of a machine describe?

• The ratio of the machine's output force to input force

• The amount of work it can perform over time

• The ratio of the machine's useful work output to total work input

• The speed at which the machine can perform work