Question

1. QUESTION: A man pulls out a 25 kg package with wooden roof coverings by pushing it onto the roof with a slope of 35 °. The kinetic coefficient of friction between the previously installed wooden roof coverings and the package is 0.32. Find the force required to push the package up the roof with an acceleration of 0.2 m / s^2 . (Take g = 9,8 m / s^2 )

Answer 1

Given:

• mass of package:
• slope:
• kinetic coefficient of friction
• acceleration :
• 

let,s first draw an free body diagram of a system,

from the diagram, for equilibrium

now, in the direction of motion, according to newtons second law of motion,

Force required to push the package