Centripetal force and acceleration

Question 1

Why is there centripetal acceleration?

Answer 1

Since the direction of an abject moving in a circle is constantly changing, there is a constant acceleration acting towards the centre of the circle.

Question 2

Symbol for centripetal acceleration

Answer 2

a(T down)

Question 3

Equations for centripetal acceleration

Answer 3

a(T down) = vw = rw^2=v^2/r

Question 4

Equations for centripetal force

Answer 4

F=mv^2/r=mrw^2=mvw

Question 5

Tension in string around circle

Answer 5

At top T= mrw^2-mg
At horizontal T=mrw^2
At bottom T= mrw^2 +mg