Physics

Physics

Problem

Which of the following expressions gives the total work done on a body when several constant forces F⃗1, F⃗2, …\vec F_1,\,\vec F_2,\,\ldots act on it while it undergoes a displacement s⃗\vec s? a) W=F⃗net×s⃗W=\vec F_{\text{net}}\times\vec s b) W=∑iFi sW=\displaystyle\sum_i F_i\,s c) W=1n∑iF⃗i⋅s⃗W=\displaystyle\frac{1}{n}\sum_i \vec F_i\cdot\vec s d) W=∑iF⃗i⋅s⃗W=\displaystyle\sum_i \vec F_i\cdot\vec s

Browse the problem library