Simple Machines and Levers

Simple machines make the work we have to do easier, but it is still the same amount of work.

• TRUE

• FALSE

Tags

NGSS.MS-PS3-5

When you kick a ball the fulcrum is your ..

• foot

• ball 

• leg 

• knee

Tags

NGSS.MS-PS2-1

What simple machine has a fulcrum and can be used to lift a weight?

• Pulley

• Lever

• Wedge

• Incline

What are levers?

• An inclined plane wrapped around a cylinder or cone

• A wheel that has a rope wrapped around it

• A simple machine with a board or bar that rests on a turning point called the fulcrum

• Consists of a rod attached to a wheel

Tags

NGSS.MS-PS2-2

Which is not a simple machine?

• Pulley

• Screw

• Wedge

• Spring

What type of simple machine is found on the cap of a jar?

• Screw

• Pulley

• Lever

• Inclined Plane

What does this image represent?

• A pulley

• A wedge

• A lever

• A wheel and axle

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is a pulley?

• a simple lifting machine consisting of a rope which unwinds from a wheel on to a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.

• a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.

• a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.

• a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Look at the following picture! The minimum force for F2 is...

• 2.500 N

• 2.000 N

• 1.500 N

• 500 N

Tags

NGSS.HS-PS2-1

The following pulley lifting 100 N load, what is the minimum force is needed?

• 50 N

• 100 N

• 200 N

• 10 N

Tags

NGSS.MS-PS2-2