A mass of 50kg rests on a horizontal plane it has a coefficient of friction of 0.64, what is the minimum force needed? Take acceleration due to gravity as 9.81 m/s2.

313.6N

Explanation:

Given parameters;

Mass of the body  = 50kg

Coefficient of friction = 0.64

Acceleration due to gravity  = 9.81m/s²

Unknown:

Minimum force needed to move the body = ?

Solution:

To move this body, the minimum force must overcome the frictional force. So, the value of force that equals to that of the frictional force will set the body in motion.

 Frictional force  = Umg

U is the coefficient of friction

m is the mass

g is the acceleration due to gravity

  Now insert the parameters and solve;

            Frictional force  = 0.64 x 50 x 9.8  = 313.6N

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