A classical mechanics problem by Vikram Singh
A bob moves in a horizontal circle at constant speed.
(The cord sweeps out a cone as the bob rotates.) The bob has a mass
of
m = 0.06 kg
, the string has length
L = 1.3 m
and negligible
mass, and the bob follows a circular path of radius
r = 0.5 m
.
Q : The speed of the motion is .
Find a+b .
The answer is 11.
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1 solution
T cos(x)=(m(v)^2)/r,where T-> Tension,x the angle between them.Tension was asked in the previous problem,which turned out to be 0.65.Find v and express in (b sqrt(3)/a form,and hence find a+b.