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**Unformatted text preview: **give an expression for the kinetic energy when the spring is at its equilibrium length. A ball moves on a spring at a 30 angle below the horizontal. If the ball is released from rest at 1m above the equilibrium, how much will the spring stretch beyond its equilibrium length (in terms of k and m)? A 2kg ball on a 3m pendulum is released from rest at a 45 above the lowest point. If the spring constant is 3600N/m, how far will the spring compress? (Ignore the small rise in the ball at the end.) A cart is to be released from the left side of the roller coaster shown below. If the cart is to make it all the way around the loop (which has a radius of 20m) without falling, what is the minimum height of the starting point?...

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