Which of the following mathematical expressions represents the work done by a force…

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

Which of the following mathematical expressions represents the work done by a force that varies with position x when the particle moves from xix_i to xfx_f along the x-axis? (a) W=∫xixfx dF\displaystyle W = \int_{x_i}^{x_f} x\,dF (b) W=F(xi)+F(xf)2 (xf−xi)\displaystyle W = \dfrac{F(x_i)+F(x_f)}{2}\,(x_f-x_i) (c) W=∫xixfF(x) dx\displaystyle W = \int_{x_i}^{x_f} F(x)\,dx (d) W=F(xf) (xf−xi)\displaystyle W = F(x_f)\,(x_f-x_i)

Related theory

Browse the problem library