A block of mass m slips on a rough horizontal table under the action of a horizontal force applied to it. The coefficient of friction between the block and the table is µ. The table does not move on the floor . Find the total frictional force applied by the floor on the legs of the table. Do you need the friction coefficient between the table and the floor or the mass of the table?
Answers
As given in the question, the block moves on the table, thus, the limiting friction has been reached and the frictional force on the block is µmg.
By the Newton's third law of motion, Equal and opposite friction force will be applied by the block on the table which will be given the mathematical expression, F = µmg,
Now, the table does not move on the floor, this means it is at rest.
Therefore, Frictional force will be equal to the,
∴ F = µmg
Now, From this we can say that we need not to be find the coefficient of the Friction between the table and the floor. Also, we need not to be find the Mass of the table.
Hope it helps.
Answer:
By the Newton's third law of motion, Equal and opposite friction force will be applied by the block on the table which will be given the mathematical expression, F = µmg,
Now, the table does not move on the floor, this means it is at rest.
Therefore, Frictional force will be equal to the,
∴ F = µmg
Now, From this we can say that we need not to be find the coefficient of the Friction between the table and the floor. Also, we need not to be find the Mass of the table.