Before doing any calculations, can you assume that the total momentum of the actor is conserved at all times throughout the stunt? Explain your answer briefly but clearly. |Before doing any calculations, can you assume that the total mechanical energy (kinetic + potential) of the actor is conserved at all times throughout the stunt? Explain your answer briefly but clearly. If the magnitude of the maximum acceleration of the actor is to be equal to 6g, what is yf?

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|An 80 kg movie actor is preparing for a stunt in which she will fall
from a window a height h above a safety net. The safety net can be considered as an ideal
spring with a spring constant 2000 N/m. The actor will fall from rest from the window
and land in the net. The net will then sink down to a final height yf. (The net will then
spring back and launch her back into the air, but you should ignore that.) Take the origin
to be at the original height of the safety net, which is also the relaxed position of the net.
Before doing any calculations, can you assume that the total momentum of the
actor is conserved at all times throughout the stunt? Explain your answer briefly but
clearly.
|Before doing any calculations, can you assume that the total mechanical energy
(kinetic + potential) of the actor is conserved at all times throughout the stunt? Explain
your answer briefly but clearly.
If the magnitude of the maximum acceleration of the actor is to be equal to
6g, what is yf?
Transcribed Image Text:|An 80 kg movie actor is preparing for a stunt in which she will fall from a window a height h above a safety net. The safety net can be considered as an ideal spring with a spring constant 2000 N/m. The actor will fall from rest from the window and land in the net. The net will then sink down to a final height yf. (The net will then spring back and launch her back into the air, but you should ignore that.) Take the origin to be at the original height of the safety net, which is also the relaxed position of the net. Before doing any calculations, can you assume that the total momentum of the actor is conserved at all times throughout the stunt? Explain your answer briefly but clearly. |Before doing any calculations, can you assume that the total mechanical energy (kinetic + potential) of the actor is conserved at all times throughout the stunt? Explain your answer briefly but clearly. If the magnitude of the maximum acceleration of the actor is to be equal to 6g, what is yf?
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