- #1
SadPanda6022
- 33
- 0
OK, I have never had physics till this semester and I am in calculus based physics and it is kicking my butt.
I don't understand how derivatives are properly used in the formulas, and I have an example, my question is the image attached.
@=theta
A=alpha
SO,
A) I need omega (angular velocity). w= d@/dt right? so if @=0.11(4.9)^2, plugged into that equation...
we end up with:
w=d(0.11*4.9^2)/d(4.9)
w=0.11(2)(4.9)/1=1.08 rad/s, <------this is right I think.
B) got it: v=rw, no sweat, v=10.8m/s
C) Here is where I trip up. According to my understanding, A=dw/dt, which means d(1.08)/d(4.9)...
but that's not right, derivatives of constants=0...I don't understand. It's been a while since I took calculus, so am I just messing something dumb up?
I don't understand how derivatives are properly used in the formulas, and I have an example, my question is the image attached.
@=theta
A=alpha
SO,
A) I need omega (angular velocity). w= d@/dt right? so if @=0.11(4.9)^2, plugged into that equation...
we end up with:
w=d(0.11*4.9^2)/d(4.9)
w=0.11(2)(4.9)/1=1.08 rad/s, <------this is right I think.
B) got it: v=rw, no sweat, v=10.8m/s
C) Here is where I trip up. According to my understanding, A=dw/dt, which means d(1.08)/d(4.9)...
but that's not right, derivatives of constants=0...I don't understand. It's been a while since I took calculus, so am I just messing something dumb up?