Exhibit 10-1
The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track. Use this exhibit to answer the following question(s).
-The angular speed of the hour hand of a clock,in rad/s,is
A) .
B) .
C) .
D)1 800π.
E)7 200π.

Question

Exhibit 10-1
The figure below shows a graph of angular velocity versus time for a woman bicycling around a circular track.  Use this exhibit to answer the following question(s).
-The angular speed of the hour hand of a clock,in rad/s,is
A) . 
B) . 
C) . 
D)1 800π. 
E)7 200π.

Quizplus · Accepted Answer

The angular speed of the woman is 2π/25 rad/s (determined by finding the time for one complete revolution and dividing by 2π). The hour hand of a clock completes one revolution in 12 hours, or 43200 seconds (12 hours x 60 minutes/hour x 60 seconds/minute). Therefore, the angular speed of the hour hand is 2π/43200 rad/s, which simplifies to π/21600 rad/s. Rounding to two decimal places gives the answer of 0.00015 rad/s, which is equivalent to choice B (11ea7ff9_2b16_f34e_a768_095268f48d44_TB2295_11).

Exhibit 10-1 The Figure Below Shows a Graph of Angular Velocity Versus