1 2 3 4 5 6 7 100

1

2

3

4

5

6

7

$100 $200 $200 $100 $200 $300 $300 $400 $400 $500 $500 8

What occurs when a force causes an object to move in the same direction as the force? 9

Work 10

What is the rate at which work is done? 11

Power 12

The amount of work you do on a machine is called: 13

Work Input 14

A machine that consists of more than one simple machine is called a: 15

Compound Machine 16

This is a comparison of a machine’s work output with the work input. 17

Mechanical Efficiency 18

Fxd=? 19

Work 20

The number of times a machine multiplies an effort force. 21

Mechanical Advantage 22

The fixed point on a lever is called? 23

Fulcrum 24

Weight is a measure of what force? 25

Gravity 26

An incline plane wrapped in a spiral around a cylindrical post is called a ____. 27

Screw 28

The unit for work is the: 29

Joule (J) 30

This type of pulley is attached to the object being moved. 31

Movable Pulley 32

The type of machine in which work input equals work output is a(n) ____ machine. 33

Ideal 34

What type of machine is shown here? 35

Mechanical Efficiency (ME) 36

What is the gear ratio? 37

30/60=1/2=0. 5 38

How much work is done lifting a 50 N object a distance of 4 meters? W=Fxd 39

200 J 40

A wheel with teeth along its circumference. 41

Gear 42

How much work is done by a student just holding a 3 N book over their head that is 2 m off the ground? 43

0 J 44

A grooved wheel with a rope or chain running along the groove. 45

Pulley 46

A ____ machine does work with only one movement. 47

Simple 48

What can you reduce to increase mechanical efficiency? 49

Friction 50

An incline plane with one or two sloping sides. 51

Wedge 52

A device that makes work easier. 53

Machine 54

Simple machine made up of two wheels of different sizes that rotate together. 55

Wheel and Axle 56

An incline plane increases ______ and reduces ______ to move an object. 57

Distance Force 58

There are this many types of simple machines? 59

6 60

2. Which of these cannot be done by a machine? Multiply force Multiply Energy Work Change direction of force 61

100% 62

Name the six simple machines: 63

Lever, wheel and axle, pulley, inclined plane, wedge, and screw 64

Which is always greater than the other? AMA or IMA 65

IMA 66

What happens to the IMA of an inclined plane as the slope increases? Increase or decrease 67

Decrease 68

69

4. A lever can be used to multiply ________ or change _______. direction, force power, direction length, force, direction 70

71

72

The pivot point of lever is called Add lever pict 73

Which object is a lever? 74