- #1
FearTheHump
- 7
- 0
Simple harmonic motion! :(
A 65-kg person jumps from a window to a fire net 18m below, which stretches the net 1.1m. Assume that the net behaves like a simple spring, and (a) calculate how much it would stretch if the same person were lying in it. (b) How much would it stretch if the person jumped from 35m?
No idea. All of the equations I have seem to reference acceleration, or velocity, or force...etc. I can't figure out what to use for this.
I have no idea where to start with this question. What confuses me the most is the whole "falling 18 metres" or..."falling 35 metres". Now, I have got massive holes in my physics knowledge (slacked off a lot last year, I will admit), but from what I understand, f=ma, which means that the resulting force will be the same for both drops, right? Well, logically, no, but from my limited physics knowledge, apparently.
Please help me not fail physics once again! :(
Homework Statement
A 65-kg person jumps from a window to a fire net 18m below, which stretches the net 1.1m. Assume that the net behaves like a simple spring, and (a) calculate how much it would stretch if the same person were lying in it. (b) How much would it stretch if the person jumped from 35m?
Homework Equations
No idea. All of the equations I have seem to reference acceleration, or velocity, or force...etc. I can't figure out what to use for this.
The Attempt at a Solution
I have no idea where to start with this question. What confuses me the most is the whole "falling 18 metres" or..."falling 35 metres". Now, I have got massive holes in my physics knowledge (slacked off a lot last year, I will admit), but from what I understand, f=ma, which means that the resulting force will be the same for both drops, right? Well, logically, no, but from my limited physics knowledge, apparently.
Please help me not fail physics once again! :(