explain why please 3.-In moving a 35.0-kg box from one side of a classroom to the...

Question

Question

explain why please
3.-In moving a 35.0-kg box from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is n

Answer 1

Answer #1

here,

mass of the box , m = 35 kg

a)

let the coeficient of static friction be us

the force required to move the box , ffs = us * m * g

300 = us * 35 * 9.81

solving for us

us = 0.87

the coefficient of static friction is 0.87

b)

let the coefficient of kinetic friction be uk

the force required to move the box , ffk = uk * m * g

240 = uk * 35 * 9.81

solving for uk

uk = 0.7

the coefficient of kinetic friction is 0.7

Answer 2

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