Circular Motion Flashcards
1
Q
How is arc length calculated?
A
s = rθ
2
Q
How is angular displacement calculated?
A
θ = ωt
3
Q
How is the linear speed of a point calculated?
A
v = rω
4
Q
How is the time period calculated?
A
T = 2π/ω
5
Q
How is angular velocity calculated in terms of frequency?
A
ω = 2πf
6
Q
What is the unit of angular velocity?
A
rads^1
7
Q
How is acceleration calculates?
A
a = v^2/r = rω^2
8
Q
What direction does the acceleration of an object in circular motion act in?
A
Towards the centre
9
Q
How is centripetal force calculated?
A
F= mv^2/r = mrω^2
10
Q
Why does centripetal force not do any work?
A
The force acts perpendicularly to the velocity.
11
Q
When is the tension of a string at its minimum?
A
At the top of the circle
