A 20-kg mass is fastened to a light spring ( k = 380N/m) that passes over a pull

Question

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

Explanation / Answer

A 20-kg massis fastened to a light spring (k = 380 N/m) that passesover a pulley as shown.
The pulley is frictionless, and the mass is released from rest whenthe spring is unstretched.
After the mass has dropped 0.40 m, what is itsspeed?
2.2m/s
2.5m/s
1.9m/s
1.5m/s
3.6m/s

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