- #1
2Big2Bite
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Homework Statement
Hi
I have two problems i need to solve mainly 1, but i need to check if 2a and 2b is correct
here it is:
- A simple harmonics oscillator has an amplitude of 0,1m.At what displacement will its kinetic and potential energies be equal
- a) What is the force due to the atmosphere on one side of door of area 2m2?
b) If the difference in pressure on the two sides of a closed door of area 2m2 is 0,01 atm, what is the net force on the door? Do you think you could open it by hand?
Homework Equations
in first problem i though of using x=A/√2 where A is the amplitude but i have no idea how to solve this in any way other.
In the two other problems i though of using p=F/A and then in last problem find the difference with F1-F2
The Attempt at a Solution
1) Though trying putting the x=A/√2 = 0,07 but I am not sure this is correct really since i just tried googling around for the answer and looking in the book.
Since our teacher give us this hint: v = dx/dt for x = Acoswt but idk how to use this.
2a) First i found F=P*A = 101300 Pa * 22 = 405200N
b) First i found the force F=P*A = 101300 Pa*0,99*2m2 = 401148 N
where the difference is F1-F2 = 405300-401148 = 4052N which would make it quite hard to try open the door