A body of mass 6 kg moves in a straight line according to the equation $x = t^{3} - 75t$, Where $x$ denotes the distance in metre and $t$ the time in second. The force on the body at $t = 4$ s is

Question

Dr. Abubacker · Accepted Answer

(c) $v = 3t^{2} - 75;a = 6t$
$F = ma = 36t$. At $t = 4\ s,F = 144$ N

Q. A body of mass 6 kg moves in a straight line according to the equation $x = t^{3} - 75t$, Where $x$ denotes the distance in metre and $t$ the time in second. The force on the body at $t = 4$ s is

Explanation

Reviewed by Dr. Abubacker

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