A 330-kg piano slides 3.6 m down a 28º incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40. Calculate the force exerted by the man. Give your answer in
Newtons, do not enter units.
- In the problem above, what is the work done by the normal force?
- With regard to question 5, what is the work done by the man on the piano? Give your answer in Joules, and do not enter units
- With regard to question 5 above, what is the work done by the friction force? Give your answer in Joules and do not enter units.
- With regard to the question above, what is the work done by the force of gravity? Give your answer in Joules, do not enter units