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Solving a Motion Problem with Work-Energy Theorem
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[QUOTE="Philip551, post: 6848943, member: 686094"] I have been trying to solve the following problem: Point-like object at (0,0) starts moving from rest along the path y = 2x[SUP]2[/SUP]-4x until point A(3,6). This formula gives the total force applied on the object: [B]F [/B]= 10xy [B]i [/B]+ 15 [B]j[/B]. a) Find the work done by F along the path, b) Find the speed of the object at point A For a) I have applied the formula for work with the integral and have integrated along the path to find the value for work. My first thought about approaching b) was since I know the total work and that the object starts moving from rest, I can use the work-energy theorem to find the speed at A. The problem with that is that I don't know the mass of the object. [/QUOTE]
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Solving a Motion Problem with Work-Energy Theorem
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