Speed on Reaching the Spring

Difficulty: Easy · Topics: Elastic Potential Energy, Energy Conservation, Springs

Prujinaga yetgandagi tezlik

In the set-up shown (d = 1.0 m),

physics "view":[-1.2,-0.45,2.2,4.6],"alt":"A ball of mass m held a height d above the top of a vertical spring of constant k.","items":["type":"ground","from":[-0.7,0],"to":[1.7,0],"depth":0.35,"type":"spring","from":[0.5,0],"to":[0.5,2.2],"coils":12,"r":0.24,"label":"k","side":-1,"type":"line","from":[0.15,2.2],"to":[0.85,2.2],"width":1.6,"type":"ball","at":[0.5,3.95],"r":0.26,"label":"m","anchor":"w","type":"line","from":[0.5,3.69],"to":[1.2,3.69],"dash":"2 2","width":0.9,"type":"line","from":[0.85,2.2],"to":[1.2,2.2],"dash":"2 2","width":0.9,"type":"dim","from":[1.1,3.69],"to":[1.1,2.2],"label":"d","anchor":"e"],"scale":1.3

how fast is the ball moving when it first touches the spring? Take g = 10 m/s^2.