Circular Motion
IB Physics topic 6.1
Question 1
Which quantity is depicted in the image by the symbol θ?
Linear displacement
Angular displacement
The length
Movement
Question 2
What is the SI unit of angular displacement?
Radians
Degrees
Radians per second
Degrees per second
Question 3
Which quantity is depicted in the image?
Speed
Velocity
Angular speed
Angular velocity
Question 4
What is the SI unit of angular speed?
° / s
rad / s
m / s
rad
Question 5
Which quantity describes how long it takes to complete one circle?
Question 6
Which quantity describes how many circles an object completes in 1 second?
Question 7
Which are correct units for frequency?
s
1/s
Hz
Hertz
Hurts
Question 8
It is possible to derive an equation that connects linear (tangential) velocity v and angular speed ω using the fact that v = s / t (the distance the object covers to complete the circle in a given time t) and ω = 2π / T. Try to do this derivation and select the correct outcome.
v = ω / r
v = r / ω
v = ω.r
v = ω
Question 9
A large clock has a minute hand that is 4.2 m long. Calculate the angular speed of the minute hand. Remember that the result must have the SI unit rad/s. Round your result to 3SF.
Question 10
What would the linear speed be of this minute hand of 4.2 m be which has a angular speed of 0.00175 rad/s? Round your answer to 3 SF.
Question 11
Which of these expressions give a correct equation for centripetal force? (Multiple answers are correct and you might even have to do a little derivation to check some of them!)