The angular speed of the hour hand of a clock, in rad/s, is:

2. Write a detailed solution. Identify the given quantities and unknowns. Label them properly.

39. John observes a ball of radius 0. 0300 m rolling along a horizontal table at a constant linear speed of 5.20 m/s. If John observes the ball roll off the edge and fall a distance of 6.10 m vertically before hitting the floor. While the ball is in the air, what is the angular displacement John would observe? А. 19.3 rad В. No answer is correct C. 22.6rad D. 11.8 rad Е. 14.9 rad

18.) A grinding wheel 0.40 m in diameter rotates at 2200 rpm . a.) Calculate its angular velocity in rad/s. Express your answer using three significant figures. w=_______________rad/s b.) What is the linear speed of a point on the edge of the grinding wheel? Express your answer to two significant figures and include the appropriate units. v= ______________ ______________ c.) What is the acceleration of a point on the edge of the grinding wheel? Express your answer to two significant figures and include the appropriate units. aR=______________ _____________

Starting from rest, the two wheels of a mountain bike have both an angular acceleration of 4.0 rad/s^2. How long does it take to make 10 revolutions? A. 0.50 s. B. 0.71 s. C. 2.2 s. D. 2.8 s. E. 5.6 s

B. F. 2.480 cm C. 1.682 cm 1--1 IZKUK A grinding wheel 1.40 m in diameter rotates with angular speed 1340 rpm. What is the linear speed of a point on the edge of the grinding wheel? 13. A. 98.23 m/s D. 111.6 m/s B. 106.5 m/s E. 77.27 m/s 91.90 m/s C. 81.76 m/s F. 1--1 [carpet-3] IZKUO An object at the end of a 0.95 m string swings around in a circl

A point object with a mass of 150 g can move around a circular track that has a radius of 25 cm. What is the moment of inertia of the object around the center of the track? a. 0.00017 kilogram. meter squared b. 0.00094 kilogram. meter squared c. 0.00038 kilogram. meter squared d. 0.00057 kilogram. meter squared