A box of mass 40 kg is pulled at a constant speed a distance of 5 m over a rough horizontal ground with a coefficient of
Posted: Sun May 22, 2022 8:23 am
A box of mass 40 kg is pulled at a constant speed a distance of 5 m over a rough horizontal ground with a coefficient of friction a 0.25 with it by a force F making an angle of 30° below the horizon. (1) What does F work? (b) What is the work of friction force? (c) What is the value of F?