A spring stores 5j of energy when stretched by 25 cm.
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w = (1/2) k x²
x = 0.25 m
w = 5j
k = 2 w / x² = (2 x 5)/0.25 x 0.25 = 10 / 0.0625 = 160 N/m
hope , it helps
x = 0.25 m
w = 5j
k = 2 w / x² = (2 x 5)/0.25 x 0.25 = 10 / 0.0625 = 160 N/m
hope , it helps
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