Chapter 6: Circular Motion

Uniform circular motion is the motion of an object in a circle with

(a)  

If displacement is for linear motion, then what is its equivalent in circular motion?

(a)  

What is the unit for angular displacement?

• θ

• rad

• radish

• theta

What is the symbol for angular velocity?

• θ

• ψ

• ω

• Ω

What is the relation between r, s and θ?

• θ = rs

• r = sθ

• s = r/θ

• s=rθ

What is the relation between v, r and ω?

• v = rω

• v = r/ω

• ω = vr

• ω = r/v

Direction of (a)   at every point along the circular path is tangent to the point.

What is the relationship between period, T and frequency, f?

• T = f

• T is directly proportional to f

• T = kf

• T = 1/f

Given that the angular velocity of a car is 25 rpm. What is its angular velocity in rad/s?

• 2.62

• 0.83

• 157.1

• 78.5

centripetal acceleration is the acceleration of an object moving in a circular path and it is directed towards (a)   .