Chapter 9- Simple Machines

Question 1

Levers

Answer 1

simple machine usually consisting of a long, rigid object that moves around a turning point when a force is applied

Question 2

Fulcrum

Answer 2

Point around in which a lever turns

Question 3

Load

Answer 3

force, such as the weight of an object, resisting motion against which a lever works

Question 4

Effort

Answer 4

force used to cause movement

Question 5

First class lever

Answer 5

lever with the fulcrum between the effort and the load

Question 6

Force multipliers

Answer 6

simple machine that supplies a greater force than the effort used. The effort must be applied over a greater distance than the load is moved

Question 7

Second class levers

Answer 7

lever with the load between the effort and the fulcrum

Question 8

Mechanical advantage

Answer 8

the advantage of force-multiplying levers or other machines as defined by load/effort

Question 9

Third class lever

Answer 9

lever with the effort between the load and the fulcrum

Question 10

Speed multiplier

Answer 10

simple machine that increases the speed of an object. The effort applied must be greater than the load but applied over a shorter distance