sparknotes
Rotational Kinetics
Problems
Problem :
Most planets orbit the sun in elliptical orbits. Do these planets exhibit rotational motion?
Problem :
A frisbee completes 100 revolutions every 5 seconds. What is the angular velocity of the frisbee?
Problem :
A car, starting from rest, accelerates for 5 seconds until its wheels are moving with an angular velocity of 1000 rad/s. What is the angular acceleration of the wheels?
Problem :
A merry-go-round is accelerated uniformly from rest to an angular velocity of 5 rad/s in a period of 10 seconds. How many times does the merry-go-round make a complete revolution in this time?




=
=
= 40Π rad/s = 125.7 rad/s
=
= 20 rad/s2
Δt
Δt
(10)
×
= 3.98 revolutions


