1.

A particle is moving in a circle of a radius 40 cm has a linear speed of 30m//s at a certains intant its linear speedis increasesing at the rate of 4m//s^(2). Increasing at the instant will be

Answer»

`200m//s^(3)`
`600m//s^(3)`
`100m//s^(2)`
`300m//s^(3)`

Solution :`(d)/(DT)(V^(2)/(v))=(2v)/(r)(DV)/(dt)`
`=(2xx30xx4)/(0.4)=600m//s^(3)`


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