Question

甲、乙兩隊(duì)拔河，甲隊(duì)勝，則下列說(shuō)法正確的是（　�。�

A．甲對(duì)乙的拉力大于乙對(duì)甲的拉力，所以甲隊(duì)勝

B．只有當(dāng)甲隊(duì)把乙隊(duì)勻速拉過(guò)去時(shí)，甲對(duì)乙的拉力才與乙對(duì)甲的拉力相等

C．當(dāng)甲隊(duì)把乙隊(duì)加速拉過(guò)去時(shí)，甲對(duì)乙的拉力大于乙對(duì)甲的拉力

D．甲對(duì)乙的拉力始終等于乙對(duì)甲的拉力，只是地面對(duì)甲的最大靜摩擦力大于地面對(duì)乙的最大靜摩擦力，所以甲隊(duì)勝

Answer 1

物體間力的作用是相互的，對(duì)于拔河的兩個(gè)隊(duì)，甲對(duì)乙施加了多大拉力，乙對(duì)甲也同時(shí)產(chǎn)生一樣大小的拉力，雙方之間的拉力并不是決定勝負(fù)的因素，哪邊能獲勝只取決于哪邊的最大靜摩擦力大，故只有D選項(xiàng)正確．
故選D