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A point on the periphery of a rotating d...

A point on the periphery of a rotating disc has its acceleration vector making angle of `30^(@)` with the velocity . The ratio `(a_(c)//a_(t) (a_(c)` "is centripetal acceleration and `a_(1)` is tangential acceleration ") equals

A

`sin 30^(@)`

B

`cos 30^(@)`

C

`tan 30^(@)`

D

None

Text Solution

Verified by Experts

(c) The tangential acceleration is along the tengent and `a_(c)` acts radially inward. The resultant acceleration

`:." " tan 30^(@)=(a_(c))/(a_(t))`
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