If an `x = a ( cos theta + theta sin theta)` and ` y = a ( sin theta - theta cos theta )` and `theta` increase at uniform rate `omega`. The velocity of particle is
Here . `omega = (d theta)/(dt)`
`:.` `v_x = (dx)/(dt) = a {- sin theta (d theta)/(dt) + sin theta (d theta)/(dt) + (d(sin theta))/(dt)}`
= `a omega [ - sin theta + sin theta + theta cos theta]`
= `a omega theta cos theta`
`v_y = (dy)/(dt) = a{cos theta (d theta)/(dt) - cos theta (d theta )/(dt) + theta omega sin theta }`
= `a omega {theta sin theta }`
= `a omega theta sin theta `
`:. ` ` v = sqrt(v_x^2 + v_y^2)`
= `a omega theta sin theta`
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