Question

Solve for the tension T in the vertical section of string.
Express T in terms of the known variables I, m, r, and g

Answer 1

I*alpha = -Tr
Tr = -I*alpha
T = -I*alpha/r


Omega = v/r

you can derive

alpha = a_y/r

T = -I*alpha/r
T = -I*(a_y/r)/r
= -I*a_y/r^2

ma_y = T - mg
ma_y = -I*a_y/r^2 - mg
ma_y + I*a_y/r^2 = -mg
Distributive law
a_y(m + I/r^2) = -mg
a_y = -mg / (m + I/r^2)

Answer 2

PS: you should go in the physics section

Answer 3

so the answer is T=-I(-mg/m+1/r^2)/r^2 ???

Answer 4

no the very last one ii wrote

Answer 5

a_y = -mg / (m + I/r^2) this is the answer?

Answer 6

id say so but remember it's what T is

Answer 7

a_y is what was used to explain it

Answer 8

so T=-mg / (m + I/r^2) ??