A conservative force F S is in the +x-direction and has
Chapter 7, Problem 7.61(choose chapter or problem)
A conservative force F S is in the +x-direction and has magnitude F1x2 = a>1x + x022 , where a = 0.800 N # m2 and x0 = 0.200 m. (a) What is the potential-energy function U1x2 for this force? Let U1x2 S 0 as x S . (b) An object with mass m = 0.500 kg is released from rest at x = 0 and moves in the +x-direction. If F S is the only force acting on the object, what is the objects speed when it reaches x = 0.400 m?
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