A car wheel is rotated to uniform angular acceleration about its axis. Initially, its angular velocity is zero. It rotates through an angle θ1 in the first 2 s. In the next 2 s, it rotates through an additional angle θ2 , the ratio of θ2θ1 is
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a
1
b
2
c
3
d
4
answer is C.
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Detailed Solution
α= constant ∴ θ=12αt2∵ θ∝t2or θ2+θ1θ1=2+222=4 or θ2θ1=3
A car wheel is rotated to uniform angular acceleration about its axis. Initially, its angular velocity is zero. It rotates through an angle θ1 in the first 2 s. In the next 2 s, it rotates through an additional angle θ2 , the ratio of θ2θ1 is