رد: فيزياء: أي استفسار أول سؤال
السلام عليكم
في سؤالين اليوم مره ماعرفت احلهم بليز ساعدوني :
1- a 5-kg box is pulled up an inclined plane (angle=30) with a horizontal force f=50 n . if the box moves with a constant speed , what is the cofficent of friction ??
2- an 80-kg box is affected by a force of 500 n with an angle of 40 with the horizontal . if the box started its motion from rest and covered 8 m in 2 sec , what is the kinetic coefficient ???
pplz help !!
thx
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