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A 15.0-kg block is dragged over a rough, horizontal surface by a 70.0-N force acting at 20.0° above the horizontal. The block is displaced 5.00 m, and the coefficient of kinetic friction is 0.300. Find the work done on the block by a) The 70-N force, b) The normal force, and c) The gravitational force. D) What is the increase in internal energy of the block-surface system due to friction? E) Find the total change in the block's kinetic energy.

Answer :

okpalawalter8

Answer:

Explanation:

from the question we are told that

Load [tex]L=15kg[/tex]

Force[tex]F=70N[/tex]

Angle of inclination [tex]=20.0 degres[/tex]

Displacement [tex]m=5 meters[/tex]

coefficient of kinetic friction [tex]\alpha =0.300[/tex]

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