Openscied Physics

5-2: Machines

Multiple Choice

REVIEW: What is the equation you would use to solve for WORK?

• 
  

  $$W\ =\ \frac{F}{d}$$
  

• $$W=F\cdot d$$

• $$W=\frac{d}{F}$$

Multiple Choice

TRUE or FALSE: Machines increase the amount of work you do.

• True

• False

Open Ended

If your machine doubles the force you put in, how much do you think the distance you need to travel will increase?

Multiple Choice

Mr. Austin pushes down on the lever of their car jack, and the car jack pushes up on their car.

What is the output force?

• Mr. Austin pushing on the car jack

• The car jack pushing on the car

• The car's weight on the jack

Fill in the Blanks

Mr. Austin pushes down on the lever of their car jack for a total distance of 50 m, with a force of 200 N.

What work do they input to the machine?

Fill in the Blanks

Mr. Austin inputs 10,000 J of work into the car jack, and their car lifts a distance of 1 meter.

What force is the car jack outputting?