Answer:
a cyclist covers a distance of 15km in 2hours calculate his speeda cyclist covers a distance of 15km in 2hours calculate his speeda cyclist covers a distance of 15km in 2hours calculate his speeda cyclist covers a distance of 15km in 2hours calculate his speed
Without power you can't work .
Hooke's Law: F = - k x
Potential energy, PE = [1/2] k x^2 = [1/2] kx x = [kx][x/2] = -Fx/2
F = - 2*PE / x = - 2*0.0030J / 0.0047m = -1.28 N (the negative sigh indicates that the force is opposed to the displacement of the spring)
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