38. A single conservative force acts on a particle that moves along an x axis. The particle has mass

問題詳情

38. A single conservative force

acts on a particle that moves along an x axis. The particle has mass of 2.0 kg. The potentialenergy

associated with

is described by

, where x is in meters. What is the value ofxwhere

is equal to zero?
(A) -1.0 m
(B) 1.0 m
(C) 0.5 m
(D) -0.5 m
(E) 0 m

答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)