问一道力学物理题(英文)
问题描述:
问一道力学物理题(英文)
Two people are pulling a canoe on a friction surface,person A pulls at 60N{20度}and person B pulls at 60N{40度},calculate the force.
请各位帮忙滴朋友一定告知完整步骤,中文即可,
答
计算合力吧?平行四边形法则啊,将两个力分解即可.