Equilibrium

Question 1

Balance

Answer 1

A person’s ability to control equilibrium

Question 2

Base of support

Answer 2

Area bound by the outermost regions of contact between a body and support surface or surfaces

Question 3

Center of gravity

Answer 3

Point around which the weight of a body is balanced

Question 4

Center of mass

Answer 4

Point around which the mass of a body is balanced

Question 5

Couple

Answer 5

Pair of equal, oppositely directed forces that act on opposite sides of an axis of rotation to produce torque

Question 6

Dynamic equilibrium

Answer 6

A balance between applied and internal forces for a body in motion

Question 7

First class lever

Answer 7

lever positioned with the applied force and the resistance on the opposite sides of rotation

Question 8

Fulcrum

Answer 8

The point of support, or axis, around which a lever may be made to rotate

Question 9

Lever

Answer 9

A machine consisting of a body made to rotate around an axis

Question 10

Mechanical advantage

Answer 10

Ratio of force arm to resistance arm for a lever

Question 11

Stability

Answer 11

Resistance to disruption of equilibrium

Question 12

Static equilibrium

Answer 12

Motionless state

Question 13

Third class lever

Answer 13

Lever positioned with the applied force between the fulcrum and resistance