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A 0.112-kg block is suspended from a spring. When a small pebble of mass 31 g...

A 0.112-kg block is suspended from a spring. When a small pebble of mass 31 g is placed on the block, the spring stretches an additional 5.5 cm. With the pebble on the block, the block oscillates with an amplitude of 11 cm. Find the maximum amplitude of oscillation at which the pebble will remain in contact with the block.

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