A_heavy_box_of_mass_20_kg_is_pulled_on_a_horizontal_surface_by_applying_a_horizontal_force._If_the_coefficient_of_kinetic_friction_between_the_box_and_the_horizontal_surface_is_0.25,_find_the_force_of_friction_exerted_by_the_horizontal_surface_on_the_box.$

A_heavy_box_of_mass_20_kg_is_pulled_on_a_horizontal_surface_by_applyin

1.	A_heavy_box_of_mass_20_kg_is_pulled_on_a_horizontal_surface_by_applying_a_horizontal_force._If_the_coefficient_of_kinetic_friction_between_the_box_and_the_horizontal_surface_is_0.25,_find_the_force_of_friction_exerted_by_the_horizontal_surface_on_the_box.$
A.	29 N
B.	39 N
C.	49 N
D.	59 N
Answer» D. 59 N

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