Forces In Action Flashcards

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1
Q

Define centre of mass

A

The centre of mass is the point in which a force acting through it would cause acceleration but no rotation

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2
Q

Define centre of gravity

A

The point from which the weight of the object acts from

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3
Q

Define the principle of moments

A

For a body in rotational equilibrium anti-clockwise moments round a point equal clockwise moment about the same point.

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4
Q

A couple definition

A

Two force that are parallel but all no along different lines of action.

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5
Q

What is torque?

A

Fd

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6
Q

Density symbol

A

ρ (tho)

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7
Q

Density=

A

Mass/unit volume

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8
Q

Pressure define?

A

Force exerted over unit area

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9
Q

Pressure exerted by a colour of fluid

A

ρgh

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10
Q

Archimedes principle

A

The up thrust exerted on a body immersed in a cloud is equal to the weight of fluid distances

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