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A particle moves in a circle of radius ...

A particle moves in a circle of radius ` 4.0 cm` clockwese at constant speed of ` 2cm S^(-1)` . If ` hat x` and ` hat y` ar unit accleration vectors along X- asis and Y-axis respectively, find the accleration of the particle at the instant half way between ` PQ. Fig. 2 ( d) . 38.
.

A

`-4(hatx+haty)`

B

`4(hatx+haty)`

C

`-(hatx+haty)1/sqrt2`

D

`(hatx+haty)4`

Text Solution

Verified by Experts

The correct Answer is:
A, B
Acceleration vetor `bara=v^(2)/R(-hatR)`
`=-((Rcos45hatx+Rsin45haty))/R=-(hatx+haty)1/sqrt2`
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