"A marble moves along the x-axis. The potential-energy..." solved and explained

High School
Physics
Electromagnetism
Magnetic force

postillan4

Answered question

2021-01-06

A marble moves along the x-axis. The potential-energy functionis shown in Fig. 1
a) At which of the labeled x-coordinates is the force on the marble zero?
b) Which of the labeled x-coordinates is a position of stable equilibrium?
c) Which of the labeled x-coordinates is a position of unstable equilibrium?

Answer & Explanation

estenutC

Skilled2021-01-07Added 81 answers

a.) The force is zero when the slope of the graph is zero, soit is at points B and D. b.) Point B is at a stable equilibrium because you would needto use energy to move the marble away at point B. c.) Point D is at a unstable equilibrium because in order tomove the marble away from point D, the potential energy would decrease, therefore the kinetic energy would increase making it unstable.

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