(5) Moments Flashcards

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1
Q

What is the name for the Turing effect of a force?

A

Moment

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2
Q

What is the equation for a moment of a force?

A

Moment of a force = force x distance

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3
Q

What distance measurement is used when calculating a moment?

A

The perpendicular distance from pivot to the line of action of the force

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4
Q

If an object is in equilibrium what can be said about the moments acting on the force?

A

The clockwise moment are equal to the anti-clockwise moments

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5
Q

What can a simple lever and a simple gear system be used for?

A

To transmit the rotational effects of forces (they reduce the amount of work we have to do when turning objects)

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6
Q

How do levers transmit the rotational effects of forces?

A

Creating leaverage, when a force is applied to one end of the lever it’s creates a moment that is proportional to the distance of the force from the turning point,

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7
Q

How do gears transmit the rotational effects of forces?

A

A gear system may use a small gear with a large moment to transfer a large rotational force to a larger gear with a smaller moment. This allows the larger gear to rotate at a slower speed but with increased rotation (overcoming friction).

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8
Q

Give an example of when a lever can be used as a force multiplier?

A

Wrench (has a long handle so that the force applied is multiplied)

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