- #1
UrbanXrisis
- 1,196
- 1
I am given that the mass of a simple pendulum is 0.25kg, length 1m and displaced 15 degrees then released.
a) max angular acceleration?
b) max restoring force?
for a... I vound that the max velocity is 0.817m/s
[tex]\omega=\frac{v}{r}[/tex]
[tex]\omega=\frac{0.817m/s}{1m}[/tex]
[tex]\omega=0.817rad/s[/tex]
[tex]\alpha=r \omega ^2[/tex]
[tex]\alpha=1m * 0.817^2[/tex]
[tex]\alpha=0.668rad/s^2[/tex]
I know that's wrong but why?
for b...
I just multiply alpha by the radius to get acceleration then multiply that by the mass.
a) max angular acceleration?
b) max restoring force?
for a... I vound that the max velocity is 0.817m/s
[tex]\omega=\frac{v}{r}[/tex]
[tex]\omega=\frac{0.817m/s}{1m}[/tex]
[tex]\omega=0.817rad/s[/tex]
[tex]\alpha=r \omega ^2[/tex]
[tex]\alpha=1m * 0.817^2[/tex]
[tex]\alpha=0.668rad/s^2[/tex]
I know that's wrong but why?
for b...
I just multiply alpha by the radius to get acceleration then multiply that by the mass.