Simple Machines

Work can be defined as.....

• the movement of distance through force

• the movement of force through distance

• a machine

• velocity

The two parts of work are

• • -amount of force needed

  • -distance the force is used

• -wheels

  -gears

• -force

  • -levers

• -energy

  -force

How does using a machine help us?

• We can do less work in more time

• It makes it easier and less fun

• We can do more work in less time

• It increases friction

If you wanted to make lifting this rock with a lever easier, what could you do?

• Make the board on the man’s side of the fulcrum longer.

• Make the board on the rock’s side of the fulcrum longer

• Move the fulcrum closer toward the man..

• None of the above

Tags

NGSS.MS-ETS1-1

The flag pole mechanism is an example of which simple machine? 

• Inclined Plane
• Lever
• Wedge
• Pulley

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is this?

• a wedge
• an inclined plane
• a screw

What is this?

• a screw 
• a wedge
• an inclined plane
• a pulley

What simple machine is used here?

• a screw
• a wedge
• an inclined plane

Tags

NGSS.MS-PS2-2

A rope over a wheel is....

• a screw

• a wedge

• a pulley

• an inclined plan

A spiral inclined plane

• screw

• wedge

• lever

• wheel and axle