A rigid body is rotating counterclockwise about a fixed axis. Each of the following pairs of quantities represents an initial angular position and a final angular position of the rigid body. Suppose that the change in angular position for each of the pairs of values below occurred in 1 s. Which choice represents the lowest average angular speed? 1 rad, 5 rad -1 rad, 1 rad 3 rad, 6 rad
A rigid body is rotating counterclockwise about a fixed axis. Each of the following pairs of quantities represents an initial angular position and a final angular position of the rigid body. Suppose that the change in angular position for each of the pairs of values below occurred in 1 s. Which choice represents the lowest average angular speed?
1 rad, 5 rad
-1 rad, 1 rad
3 rad, 6 rad
Let's find angular speed in each of the following
cases.
1.
Initial angular position @1i= 1 rad
Final angular position @1f = 5 rad
Angular speed w1 = (5 rad - 1 rad)/1s
w1 = 4 rad/s
2.
Initial angular position @2i = -1 rad
Final angular position @2f = 1 rad
Angular speed w2 {1 rad - (-1rad)}/1s
w2 = 2 rad/s
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