A wheel is rotating about an axis that is in the z-direction. The angular velocity wt is -6.00 rad/s at f = 0, increases linearly with lime, and is +8.00 m/s at f = 7.00 s. We have taken counterclockwise rotation to be positive.
(a) Is the angular accelera1ion during this time interval positive or negative?
(b) During what time interval is the speed of the wheel increasing? Decreasing?
(c) What is the angular displacement of the wheel at f = 7.00 s?