[b-sh-b]

السلام عليكم ورحمة الله وبركاته

أتمنى تساعدوني في حل المسألة في أسرع وقت

A sack of flour of mass 4.50Kg is lifted vertically at a constant speed of
3.80m/s through a hight of 11.0m...

How great a force is required?


How much work is done on the sack by the lifting force?


بليز بسرعة