Centripetal acceleration Flashcards
Explain why velocity is not constant when an object is travelling uniformly in a circle Determine the direction of the acceleration Calculate the centripetal force
Explain why velocity is not constant when an object is travelling uniformly in a circle
An object moving in a circle is continually changing direction, velocity is made up of direction and speed therefore it is always changing.
Why is the direction of acceleration towards the centre on the circle?
The change in direction of velocity is towards the centre of the circle, therefore the acceleration of an object is towards the centre of a circle
State the equation for centripetal acceleration
A = v2/r
Prove the centripetal acceleration equation
Check notes
Derive an alternative equation for centripetal acceleration
V = wr
A = (wr)2/ r
A = w2r
What is required to make an object move around on a circular path?
A resultant force that changes its direction of motion
Define centripetal
Towards the centre of a circle
State the centripetal force for an object whirling around on a string
Tension in the string
State the centripetal force for a satellite moving around the earth
The gravitational force between the satellite and the earth due to the earth
State the centripetal force for a capsule on the London Eye
The resultant of the support force and gravitational force on the capsule
State the two equations for centripetal force
F = mv2/r
F = mw2r
