- #1
Saitama
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Homework Statement
http://i46.tinypic.com/548uox.png
Homework Equations
The Attempt at a Solution
My teacher said that we will take the axis at the point which is in contact with the ground (i don't get why we need to do so?). I followed the teacher's hint. Angular acceleration α=a/R, where a is the linear acceleration and R is the distance of the point from the axis.
Since α is same for all points,
[tex]\frac{a_1}{R_1}=\frac{a_2}{R_2}[/tex]
a1=3m/s^2
a2=we need to find this.
R1=1m
R2=4/3m.
Using these values, i get:
[tex]a_2=4m/s^2[/tex]
But this is wrong, the answer is 5m/s^2. I don't understand where i am going wrong.
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