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A 800-g block is dropped onto a relaxed vertical spring that has a spring constant k =240.0 N/m. The block becomes attached to the spring and compresses the spring 52.5 cm before momentarily stopping. While the spring is being compressed, what work is done on the block with the gravitational force on it?

While the spring is being compressed, what work is done on the block with the spring force?

What is the speed of the block just before it hits the spring? (Suppose that friction is negligible.)

If the speed at impact is doubled, what is the maximum compression of the spring?

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