A 50 N box is pulled by a rope with a force of 40 N and it moves at a constant speed. The friction acting on it would be 40N.
What is friction?
Friction is a type of force that resists or prevents the relative motion of two physical objects when their surfaces come in contact.
The friction force prevents any two surfaces of objects from easily sliding over each other or slipping across one another. It depends upon the force applied to the object.
As given in the problem that the box is moving at a constant speed, so there is no acceleration acting on the box
Sum of forces in the horizontal direction
∑F = ma
a= 0 and the only force acting in horizontal directions is externally applied 40 N and the frictional force in the opposite direction
40 N − F = 0
F = 40 N
Thus the friction acting comes out to be 40 N.
Learn more about friction from here
brainly.com/question/24186853
#SPJ5
