[غرور فتاه]

السلام عليكم د.علي

عندي سؤال وأتمنى تجاوبني عليه بالتفصيل شويه لأني عندي إجابته لكن ما فهمته وخآصة الـ external force

A box of mass 50kg initially at rest is pulled a distance of 10m along a rough horizontal floor with an external force of 150N is appilied at an angel of 30° above the horizontal . If μk=,15 find


1-the work done by friction

2- the work done by external force?