A small object with mass m 0 0900 kg moves along the x axis The only force on the object is a conservative force that has the potential energy function U(x) x 2 x 3 , where 2 00 J m 2 and 0 300 J m 3 The object is released from rest at small x When the object is at x 4 00 m, what are its (a) Speed ...

IDENTIFY We know the potential energy function for a conservative for ...

A small object with mass m = 0.0900 kg moves along the +x-axis. The only force on

Question:

A small object with mass m = 0.0900 kg moves along the +x-axis. The only force on the object is a conservative force that has the potential-energy function U(x) = -αx² + βx³, where α = 2.00 J/m² and β = 0.300 J/m³. The object is released from rest at small x. When the object is at x = 4.00 m, what are its

(a) Speed and

(b) Acceleration (magnitude and direction)?

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