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Physics, 18.01.2020 17:31 iicekingmann
Awooden block with mass 1.45 kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 29.0 degrees (point a). when the spring is released, it projects the block up the incline. at point b, a distance of 4.60 m up the incline from a, the block is moving up the incline at a speed of 5.10 m/s and is no longer in contact with the spring. the coefficient of kinetic friction between the block and incline is μk=0.45. the mass of the spring is negligible. a.calculate the amount of potential energy that was initially stored in the spring. take free fall acceleration to be 9.80 m/s2 .
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