Solving Forces and Motion Problem: Find Net Force at t=2.35s

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SUMMARY

The problem involves calculating the net force acting on a 3.45 kg object moving in a plane, with its position defined by the equations x = 7t² - 3 and y = 4t³ + 3. To find the net force at t = 2.35 seconds, one must first determine the object's acceleration using the second derivatives of the position equations. Applying Newton's 2nd law, F = ma, allows for the calculation of the net force, resulting in a definitive value based on the derived acceleration.

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Paul Nguyen
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Hi,

I am trying to help my brother do this problem but I can't figure it out! can anyone please help me...


A 3.45 kg object is moving in a plane, with its x and y coordinates given by x = 7t² - 3 and y = 4t³ + 3, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting on this object at t = 2.35 s.

thank you so much
 
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Hint: Newton's 2nd law.
 

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