Levers

Question 1

Mechanical advantage

Answer 1

The ratio of force produced (output)!compared to force applied (input)

Question 2

Mechanical advantage

Answer 2

Load (N) divided by effort (N)

Question 3

levers provide mechanical advantage

Answer 3

Levers make lifting or applying pressure easier

Question 4

Effort

Answer 4

The amount of force applied by the user (input)

Question 5

Fulcrum

Answer 5

The point that the lever pivots around

Question 6

Load

Answer 6

The force that is needed to lift a weight (the output force)

Question 7

First class lever

Answer 7

Effort, Fulcrum, Load

Examples: scissors, seesaw

Question 8

Second class lever

Answer 8

Effort, Load, Fulcrum

Wheelbarrow

Question 9

Third class lever

Answer 9

Fulcrum, Effort, Load

Fishing rod, tweezers

Question 10

Types of motion

Answer 10

Linear- straight
Rotary- circle
Reciprocating - up and down
Oscillating - curved backwards and forwards

Question 11

Load equation triangle

Answer 11

Mechanicak advantage x Effort

Question 12

Levers are used to

Answer 12

Give a greater force/power than the effort placed in

Question 13

How to increase the mechanical advantage

Answer 13

Make distance from effort to fulcrum longer than the distance from load to fulcrum

• move fulcrum closer to load
• move effort further from fulcrum