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murzikaleks [220]
3 years ago
5

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.
Physics
1 answer:
Tatiana [17]3 years ago
3 0

Answer:

Explanation:

from the question we are told that

Load L=15kg

ForceF=70N

Angle of inclination =20.0 degres

Displacement m=5 meters

coefficient of kinetic friction \alpha  =0.300

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