将大小为100N的力<img src="/Image1/f5/f5cbe6c0ee94a62aa733f11e85aa7593.png" />沿<img src="/Image1/49/49b305e0adf7ff411693581118f65f72.png" />、<img src="/Image1/91/912a862f557820b399eb43502d614682.png" />方向分解，若<img src="/Image1/f5/f5cbe6c0ee94a62aa733f11e85aa7593.png" />在<img src="/Image1/49/49b305e0adf7ff411693581118f65f72.png" />轴上的投影为50N，而<img src="/Image1/49/49b305e0adf7ff411693581118f65f72.png" />沿方向的分力的大小为200N，则<img src="/Image1/f5/f5cbe6c0ee94a62aa733f11e85aa7593.png" />在<img src="/Image1/91/912a862f557820b399eb43502d614682.png" />轴上的投影为（）。 <img src="/Image1/6e/6e9c0f2f4eb90273c3df9aeb1c5d2c6b.png" /><br>A:0<br>B:50N<br>C:200N<br>D:100N