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A spring with spring constant 400 N/m is anchored at the bottom of a frictionless 30^∘...

A spring with spring constant 400 N/m is anchored at the bottom of a frictionless 30^∘ incline. A 500 g block is pressed against the spring, compressing the spring by 10 cm, then released. What is the speed with which the block is launched up the incline?

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