Calculate Maximum Force Acting on 24 kg Mass

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The discussion focuses on calculating the maximum force acting on a mass of 24 kg, represented by the position function x(t) = 7sin(5t). The acceleration is derived from the second derivative of the position function, leading to the equation F = ma = m * x''. The maximum force can be determined by finding the maximum value of the acceleration, which occurs when sin(5t) equals 1. The correct maximum acceleration is -0.053308 m/s², and the maximum force is calculated as 24 kg * -0.053308 m/s².

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The position of a mass m = 24 kg is given (in m) by x(t) = 7sin(5t). Calculate the magnitude of the maximum force acting on the mass.

All I know is that double prime equals acceleration, but I'm not even sure it that will help me solve the problem.

Anyone have any suggestions?
 
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Right...x'' is acceleration. And from that [tex]F = ma = mx''[/tex]. All you have to do is find at what time(s) x'' is at its maximum value. Hint: The maximum value of [tex]sin t[/tex] or [tex]cos t[/tex] is 1.
 
I got x'' to equal -.053308sin(5t) then at maximum height t equals 54, but y doesn't equal 1.

What did I do wrong?
 

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