circular motion
- Created by: meercatred
- Created on: 22-04-18 19:55
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- circular motion
- scalers and vectors
- scalers only have magnitude
- speed
- vectors have direction and magnitude
- velocity
- scalers only have magnitude
- how
- occurs when a body is moving at a right angle to a force that acts inwards on it.
- e.g. satellite orbiting Earth
- centripetal forces
- gravitational
- frictional
- physical connection between centre of circle and object orbiting
- tension
- physical connection between centre of circle and object orbiting
- tension
- electrostatic
- occurs when a body is moving at a right angle to a force that acts inwards on it.
- types
- perfect circle
- e.g. ball on string being swung around
- eliptical
- e.g. Earth's orbit around sun
- perfect circle
- object constantly accelerating as it moves round, even if speed stays the same
- newton's first law
- objects remains in state of rest or uniform movement unless acted on by external force
- would naturally move in straight line, but an external force is causing it to change direction
- e.g. if ball on string was being swung round and the string was cut, ball would fly off at tangent to circle where the string was cut.
- acceleration towards centre of circle
- centripetal acceleration
- centripetal forces
- gravitational
- frictional
- physical connection between centre of circle and object orbiting
- physical connection between centre of circle and object orbiting
- electrostatic
- centripetal forces
- newton's second law- F=ma
- force = mass of object x centripetal acceleration
- centripetal acceleration
- would naturally move in straight line, but an external force is causing it to change direction
- objects remains in state of rest or uniform movement unless acted on by external force
- newton's first law
- velocity of object =
- 2 x pi x r/t
- scalers and vectors
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