Question: 9 - 7 . 1 5 . A particle starting from rest moves with the acceleration a = 4 hat ( t ) - 3

9-7.15. A particle starting from rest moves with the acceleration
a=4hat(t)-3t2j+6hat(k)fps2. Determine the principal radius of curvature of
its path at t=2sec.
=40ft
Ans.
9 - 7 . 1 5 . A particle starting from rest moves

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