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6 Cards in this Set
- Front
- Back
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Define the radian. |
The radian (rad) is defined as the angle subtended at the centre of a circle by an arc equal in length to the radius of the circle. |
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What is the angular displacement? |
The change in angle, in radius, of a body as it rotates around a circle. = distance traveled around circle/radius of circle |
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State the equation to convert degrees to radians. |
Angle in ° × (pi/180) = angle in rad |
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Define the angular speed (w) of a body in circular motion. |
The angular speed (w) of a body in circular motion is defined as the rate of change in angular displacement with respect to time. |
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Angular speed is a scalar quantity. |
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What is the definition of the centripetal force? |
The centripetal force is defined as the Resultant force acting towards the centre of the circle required to keep a body in uniform circular motion. It is always directed towards the centre of the body's rotation. |
