So anyway,I'm putting all that on gas, ropes, and new nets and a brand-new shrimping boat.

VOA: standard.other

the ropes will be pulling the block with T in the other direction, then I got 10 Newtons here.

绳子也会对另一物体施加方向相反的拉力 T,于是我知道这里是 10 牛顿

耶鲁公开课 - 基础物理课程节选