A 2-kg sphere attached to an axle by a spring is displaced from its rest position to a radius of 20 cm from the axle centerline by a standard mass of 20 kg, as in Figure 1. The same 2-kg sphere is also displaced 20 cm from the axle centerline, as in Figure 2, when the sphere is rotated at a speed of approximately
A) 4.4 m/s
B) 9.8 m/s
C) 14 m/s
D) 98 m/s
E) 0.44 km/s

Question

A 2-kg sphere attached to an axle by a spring is displaced from its rest position to a radius of 20 cm from the axle centerline by a standard mass of 20 kg, as in Figure 1. The same 2-kg sphere is also displaced 20 cm from the axle centerline, as in Figure 2, when the sphere is rotated at a speed of approximately
A) 4.4 m/s 
B) 9.8 m/s 
C) 14 m/s 
D) 98 m/s 
E) 0.44 km/s

Quizplus · Accepted Answer

The Answer of  A 2-kg sphere attached to an axle by a spring is displaced from its rest position to a radius of 20 cm from the axle centerline by a standard mass of 20 kg, as in Figure 1. The same 2-kg sphere is also displaced 20 cm from the axle centerline, as in Figure 2, when the sphere is rotated at a speed of approximately
A) 4.4 m/s 
B) 9.8 m/s 
C) 14 m/s 
D) 98 m/s 
E) 0.44 km/s

A 2-Kg Sphere Attached to an Axle by a Spring