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Hello, in this question we analyze the motion of a block that lies on an incline, which makes an angle of 30 degrees.
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The block is shut up using a spring.
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The spring constant is given as 19 .6.
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The mass of the block is 2 kilograms.
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And we are to find the elastic potential energy when a spring is compressed to a distance of 20.
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Centimeters which is 0 .2 meters.
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So we use the formula elastic potential energy is half, spring constant, extension squared.
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That gives us 0 .392 joules.
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And b we have to find a change in gravitational potential energy.
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If there is no friction and no other work is done, then the total elastic potential energy will be converted to gravity.
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Potential energy by the time the body stops.
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So at stopping point when the body's final velocity is zero, our elastic potential energy would have been completely converted to gravitational potential energy...