大家好,歡迎來到Yogi霸霸解題給你看,今天我要講解的是AP Physics C裡,Rotation的作業。請參考以下的影片。
Question 1
(a)What is the angular speed of the second hand of a smoothly running analog watch?
(b)What is the angular speed of the minute hand of a smoothly running analog watch?
(c)What is the angular speed of the hour hand of a smoothly running analog watch?
Question 2
The angular position of a point on a rotating wheel is given by
θ=1.9+4.1t^2+2.1t^3
, where θ is in radians and t is in seconds.
(a)At t = 0, what is the point’s angular position?
(b)At t = 0, what is the point’s angular velocity?
(c)What is its angular velocity at t = 4.0 s?
(d)Calculate its angular acceleration at t = 2.0 s.
(e)Is its angular acceleration constant?