SHORTANSWER. Write the word or phrase that best completes each statement or answ
ID: 1640829 • Letter: S
Question
SHORTANSWER. Write the word or phrase that best completes each statement or answers the question. 10) A 5.00 - kg object moves clockwise around a 50.0 cm radius circular path. At one 10) location, the speed of the object is 4.00 m/s. When the object next returns to this same location, the speed is 3.00 m/s. (a) How much work was done by nonconservative (dissipative) forces as the object moved once around the circle? (b) If the magnitude of the above nonconservative (dissipative) forces acting on the object is constant, what is the value of this magnitude?Explanation / Answer
a) for the non conservative forces
work done by non conservative forces = change in kinetic energy
work done by non conservative forces = 0.50 * 5 * (3^2 - 4^2)
work done by non conservative forces = -17.5 J
b)
for the magnitude of forces
F * 2pi * 0.50 = 17.5
F = 5.6 N
the magnitude of the non conservative forces is 5.6 N
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