Question
Question: If a body of mass m is moving on a rough horizontal surface of coefficient of kinetic friction \[\mu...
If a body of mass m is moving on a rough horizontal surface of coefficient of kinetic friction μ, the net electromagnetic force exerted by surface on the body is
A. mg1+μ2
B. μmg
C. mg
D. mg1−μ2
Solution
The frictional force is the self-adjustable dissipative force that works against the direction of motion of the body. The force of friction is proportional to the normal force exerted by the surface on the body, and the proportionality constant is known as the coefficient of friction, μ.
Complete step by step answer:
According to the question;
Given:
The mass of the body, m.
The normal reaction force provided by the surface on the body, FN=mg
The frictional force acting on the body in the direction opposite to the motion of the body is;
Ff=μmg
So, the net electromagnetic force exerted by the surface on the body is;