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

question 50

Multiple Choice

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

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