Any physics geniuses out there? Ap physics Problem
#21
#22
#23
#24
114.5 cm/s
anyone match? i just did it on a piece of scratch paper....didn't double check....procedure goes...
total energy = total energy, assuming no losses
KE1+PE1 = KE2+PE2 from conservation of energy
you know KE1 and KE2 from 0.5*m*v^2
you know PE1 and PE2 from k*displacement
solve for k, spring constant
plug back in to either side of the equation to find total energy
maximum velocity occurs when displacement is zero so...
total energy = 0.5*m*(v_max)^2
solve for v_max
anyone match? i just did it on a piece of scratch paper....didn't double check....procedure goes...
total energy = total energy, assuming no losses
KE1+PE1 = KE2+PE2 from conservation of energy
you know KE1 and KE2 from 0.5*m*v^2
you know PE1 and PE2 from k*displacement
solve for k, spring constant
plug back in to either side of the equation to find total energy
maximum velocity occurs when displacement is zero so...
total energy = 0.5*m*(v_max)^2
solve for v_max
Last edited by zergalisk; 01-04-2007 at 03:18 AM.
#26
Originally Posted by badtziscool
Can you describe what an ocillator does? What do you mean by displaced?
By displacement he means the distance of the axis from the center of gravity.
I am sure I could explain the electronic oscillators better, but that is not what it was in question. I hope this helps.
I am sure most of you have oscillators at home. When your cell phone vibrates that is because of an oscillator, that is a good oscillator. When your tires are unbalanced and give your car the shakes, that is a bad oscillator.
Someone please correct me if I am wrong, I studied this stuff a long time ago.
Last edited by fcarpio; 01-04-2007 at 07:30 AM.
#28
Originally Posted by derek321
well i have a quick ap physics problem that i hope someone can solve for me or at least help me...
A 300g oscillator has a speed of 95,4cm/s when its displacement is 3.0cm and 71.4cm/s when its 6.0cm. What is the oscillators maximum speed.
please help it would be appreciated. -derek
A 300g oscillator has a speed of 95,4cm/s when its displacement is 3.0cm and 71.4cm/s when its 6.0cm. What is the oscillators maximum speed.
please help it would be appreciated. -derek
#29
Originally Posted by zeroscythe
my astronomy professor has taken 4 years of advanced quantum... he showed me some "simple" concepts... man, he sure made me feel dumb lol... hes only 38 too
Its a subject where you either got it or you don't. I have a few friends who are into it and it sounds like you can do some crazy stuff with it, but learning it was a pain for me.
#30
Honestly there is no way i could do this problem with out the book. Last time i took physics was 5 yrs ago soph yr of college. Crazy part is i never needed it since i decided to switch majors and deal with computers.
To each there own. Unless you go into physics field you will forget this info unless you have a reason to do it daily. You will be able to read a problem, know you know it, but won't be able to do it with out some research
To each there own. Unless you go into physics field you will forget this info unless you have a reason to do it daily. You will be able to read a problem, know you know it, but won't be able to do it with out some research