A movie stunt requires that a 70 kg person jump off a 30 m tall building and rem

Question

A movie stunt requires that a 70 kg person jump off a 30 m tall building and remain in freefall for the full 30 m.
The stunt directors devise a method of slowing the person down to a stop using a spring loaded platform at the
end of the 30 m. The spring constant for the platform is set to be 1000 N/m (we%u2019ll ignore the mass of the
platform%u2026I know, not good, but it%u2019ll do for now.) How far down does the platform drop in catching the stuntperson?
If the maximum force that the body can handle without internal injuries is 10 times force of gravity, is
this platform adequate? Explain.

Explanation / Answer

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