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2 years ago

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A spring has a natural length of 28.0 cm. If a 23.0-N force is required to keep it stretched to a length of 36.0 cm, how much wo

rk W is required to stretch it from 28.0 cm to 32.0 cm

1 answer:

krek1111 [17]2 years ago

4 0

Answer:

0.23 J

Explanation:

k*(36 - 28) = 23

so k = 23/8 N/cm

W = k(32 - 28)²/2 = 23/8 * 4²/2 = 23 N-cm = 0.23 J

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Answer:

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The problem says that the surface is frictionless: this means that no friction is acting on the sled, therefore the energy dissipated by friction must be zero.

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u = 0 is the initial speed of the sled

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