SIMPLE MACHINE LAB

GOOD MORNING! You Need:

Pencil Science Notebook Colored Pencils Science Folder

Everything else needs to go to the back of the room.

Bell Work: Answer the following question in the back of your science notebook. Write the question! Yolanda pushes a box

150m with a force of 10 N. She does this in 2 minutes. How much power did she use?

Yolanda pushes a box 150m with a force of 10 N. She does this in 2 minutes. How much power did she use?

First: Write your equation P= W/T

Second: Fill in your equation Remember we need

a time in seconds 2 minutes * 60

seconds = 120 seconds

P= W/120 S

We are not given work but we know that w=f*d W= 10N * 150 W= 1500 J

Now, we can put it back into the equation P= 1500J / 120s

P = 12.5 W

TODAY Don’t forget you are working on the

following learning goal:

Students will be able to apply the scientific meaning of work and predict how machines reduce the amount of work in our daily lives.

Follow the procedure on your lab worksheet.

LEVER Solid bar that

rotates or turns around a fixed point called a fulcrum.

WHEEL AND AXLE A simple

machine made of a wheel attached to a shaft, or axle

PULLEY A wheel with a

grooved rim and a rope or cable that rides in the groove.

INCLINED PLANE A ramp, or a

simple machine with a sloping surface.

WEDGE A simple machine

that has a thick end and a thin end. Two inclined planes back to back.

SCREW An inclined plane

wrapped around a cylinder or cone to form a spiral.