Chapter 4:

Work it Power Rangers

Go cry to MA

It’s only machine wasteland

KISS

1 1 1 1 1

2 2 2 2 2

3 3 3 3 3

4 4 4 4 4

5 5 5 5 5

KISS 4

• A _____________ is a lever that rotates.

KISS 3

• A seesaw is a _______ class lever that has an MA of _____

It’s Only Machine Wasteland 2

• A machine that requires 200 Joules of work and puts out 50 Joules of work is how efficient?

It’s Only Machine Wasteland 1

• According to the current laws of physics, cars in the future may have 100% efficiency.

Go Cry to MA 3

• If you apply 100 N of force to a machine and the machine exerts 400 N on the object, what is the MA of the machine?

Go Cry to MA 2

• What 3 things can machines do to make work easier?

Go Cry to MA 1

• A machine’s actual MA is always greater than its ideal MA. (T/F?)

Power Rangers 1

• Equation, Units and definition of Power

Kiss 5

• To increase an inclined plane’s actual MA, you______________

KISS 2

• A______________ is a cutting tool made from a moving inclined plane.

Power Rangers 2

• If you apply a force of 100 N for 5 m and spend 2 minutes doing it, you use ___ ___ of power.

KISS 1

• A______________is an inclined plane wrapped around a cylinder.

Work it 3

• Lifting a 2 kg object 3m up requires how many Joules of energy

Work it 4

• The thumbtacks holding up the posters up in this room are doing a very small amount of work T/F?

Wasteland 2

• A machine that requires 200 J of work and puts out 50 J of work is how efficient?

Power rangers 3

• Doing a certain amount of work in less time means you use less power T/F?

1 pt: Work it

• Equation, Definition and Units for Work

2 pts: work it

• If you push a 3,000 N piano sideways a distance of 2 m, how much work was done?

Wasteland 3

• Describe one way to make a pulley system more efficient.

Go cry to MA 4

• A machine with a mechanical advantage between what two numbers will multiply distance?