Work, Mechanical Advantage, Simple Machines

________________ is done whenever a force moves an object a distance.

• Load

• Friction

• Force

• Work

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NGSS.MS-PS3-5

How can simple machines make work easier?

• by decreasing the force needed to complete the task

• by increasing the friction between the machine and the object

• by adding more work on the object than originally applied

• by removing the force of gravity on the object

Tags

NGSS.MS-ETS1-1

A doorknob is an example of a _______.

• wheel and axle

• inclined plane

• pulley

• wedge

Which type simple machine would the base of a light bulb be?

• screw
• wedge
• wheel and axle
• pulley

The fixed point around which a lever rotates is know as the

• wheel.

• fulcrum.

• input force.

• output force.

A simple machine that splits an object apart is a _______.

• inclined plane

• fulcrum

• wedge

• lever

A ramp is an example of a(n) _______.

• inclined plane

• fulcrum

• force

• lever

The bow or front of a boat splits the water as the boat moves. What kind of simple machine would the bow of the boat be?

• wedge

• screw

• ramp

• lever

Tags

NGSS.MS-PS2-1

Using the back of a hammer makes it much easier to remove a nail from a wooden board. What kind of simple machine would the hammer be classified as if you are using it for this purpose?

• Wedge

• Lever

• Pullye

• Inclined Plane

Tags

NGSS.MS-PS2-2

Which of the following is NOT a complex machine?

• bicycle

• ramp

• can opener

• wheel barrow