A heavy box of mass 50 ~kg is moving on a horizontal surface. If...

A heavy box of mass

50 \mathrm{~kg}

is moving on a horizontal surface. If co-efficient of kinetic friction between the box and horizontal surface is 0.3 then force of kinetic friction is : A heavy box of mass 50 ~kg is moving on a horizontal surface. If co-efficient of kinetic friction between the box and

A heavy box of mass 50 ~kg is moving on a horizontal surface. If co-efficient of kinetic friction between the box and

Options

A $1.47 \mathrm{~N}$
B $147 \mathrm{~N}$
C $14.7 \mathrm{~N}$
D $1470 \mathrm{~N}$

Correct answer

B. $147 \mathrm{~N}$

Step-by-step solution

F_k=\mu_k N=0.3 \times 50 \times 9.8=147 N

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