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A 20-Kg Mass Is Fastened to a Light Spring (K

Question 59

Multiple Choice

A 20-kg mass is fastened to a light spring (k = 380 N/m) that passes over a pulley as shown. The pulley is frictionless, and the mass is released from rest when the spring is unstretched. After the mass has dropped 0.40 m, what is its speed? A 20-kg mass is fastened to a light spring (k = 380 N/m) that passes over a pulley as shown. The pulley is frictionless, and the mass is released from rest when the spring is unstretched. After the mass has dropped 0.40 m, what is its speed? A) 2.2 m/s B) 2.5 m/s C) 1.9 m/s D) 1.5 m/s E) 3.6 m/s


A) 2.2 m/s
B) 2.5 m/s
C) 1.9 m/s
D) 1.5 m/s
E) 3.6 m/s

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