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Q4 W
Answer step-wise with detailed explantions
A block of mass m = 300 g falls on a spring with k = 3.0
N/cm, which shortens by x = 12.0 cm. Calculate the
Work: a) of the force of gravity and the elastic force.
Calculate in addition; b) the initial speed before the
spring impact; c) the height from which the mass falls.

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