A particle is moving on a circular path of 10 m radius. At any instant of time, its speed is 5 m/s and the speed is increasing at a rate of 2m/s2. The magnitude of net acceleration at this instant is:
A
5m/s2
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B
2m/s2
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C
3.2m/s2
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D
4.3m/s2
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Solution
The correct option is C3.2m/s2 acentripetal=V2r=5×510=2.5m/s2atangential=2m/s2anet=√a2c+a2t=√(2.5)2+(2)2anet=3.2m/s2