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Answer:
40 N/m
Explanation:
F = -kx (This is the Hooke's Law equation)
F is the force the spring exerts = 8 N
-k = spring constant
x = displacement (The distance stretched past it's natural length) = 20cm
x needs to be in meters, and 20 cm is = to 0.2 meters
Finally:
8N = -k (0.2m)
-k = 8N / 0.2 m
k = -40 N/m
<span>(300 m/s)/(10 r/s) = 30 m/round.</span>
Refer to the 2th Law of Newton
F = m. a
F = 15 x 2.8 = 42 N
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