Friction force and coefficent of friction

AI Thread Summary
To calculate the force of friction and the coefficient of friction for a sliding block with an acceleration of 3.0 m/s² and mass of 4 kg, apply Newton's Second Law. The only horizontal force is the kinetic friction, which can be expressed as the product of the coefficient of friction and the normal force. The normal force can be determined from the weight of the block, which is the mass multiplied by gravity. By rearranging the equations, the coefficient of friction can be found using the relationship between the normal force and the force of friction. This approach will yield the necessary values for the problem.
zelda1850
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Homework Statement



caculate the force of friction and coefficent of fricition acting on a sliding block given that the acceleration at 3.0 m/s sqaure

Homework Equations



coefficent of friction = fn/ff
force of friction = u fn = u fg

The Attempt at a Solution



im stuck I am only given the accelaration and mass is 4 kg too how can i solve this?
 
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The only force in the horizontal direction is the force of kinetic friction. Use Newton's Second Law to find it.
 
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