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13 December, 20:28

A particle moves along a straight line with equation of motion s = t^{5} - 2 t^{4} Find the value of t (other than 0) at which the acceleration is equal to zero.

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  1. 13 December, 20:38
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    T^4 (t-2)

    roots t=2, t=2

    delta=0

    derivation d/dt (t^5-2t^4) = t^3 (5t-8)

    local maximin = max (t^5-2t^4) = 0 at t=0

    so by olving it we get 2.133 naswer
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