Simple Machines, Work, Power, IMA, Efficiency

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

• Load

• Friction

• Force

• Work

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-PS2-2

A doorknob is an example of a _______.

• wheel and axle

• inclined plane

• pulley

• wedge

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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

Which of the following is NOT an example of the simple machine know as a screw?

• the lid of a jar

• a bolt

• a drill bit

• a crowbar

What is the formula needed to solve for work?

• w = f/d

• w = f*d

• w = f+d

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If you push a cart with a force of 60 N for 2 m, how much work have you done?

• 120 J

• 30 J

• 120 N

• 30 N

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2