(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

You are making a large spring. You want a 150kg person to be able to stand on the spring an be above or just touch the ground which is 15 cm below.

a) What is the minimum spring constant the large spring should have?

b) From the above value, if you have a mass of 70kg and land on the trampoline with a velocity of 3m/s how far do you drop? Will you touch the floor?

2. Relevant equations

F= -kx

3. The attempt at a solution

a) The force of the man is equal to Fg. So 150kg x 9.8. Using this force we could plug it into the equation F= -kx (x is 0.15m) to solve for k? Does that seem right guys?

b) The force of a 70kg person would be Fg which would be 9.8 x 70. But then you also need to factor in that the velocity would add to the force and then use Hooke's law F=-kx. I'm not sure how the velocity gets factored into this equation?

Anyone think I'm on the right track/ know how to do this?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Simple Spring question

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