Question

dwight uses a spring (k=70n/m) on a horizontal surface to make a launcher for model cars. the spring is attached to a holder that has a mass of 0.3 kg. if he compresses the spring and releases it, the launcher will move back and forth in periodic motion



if he compresses the spring by 0.4 m and releases it, what is the acceleration of the launcher as the spring reaches its natural length?

Answer 1

i need help with physics
NOW

Answer 2

Do they want numbers? Need to know more about spring constant and mass of object being launched. If it is just conceptual, "natural length" is at the end of launching, where it releases the object and no force is on either of them so the acceleration of the launcher ceases as does the acceleration it supplied to the object. Gravity lcontinue.

Answer 3

dwight uses a spring (k=70n/m) on a horizontal surface to make a launcher for model cars. the spring is attached to a holder that has a mass of 0.3 kg. if he compresses the spring and releases it, the launcher will move back and forth in periodic motion

Thats the whole question that's all it gives me

Answer 4

Sorry, have got to go. Use the fact that the potential energy of the spring is (1/2) k (x^2), where x is the displacement initially.