Your refrigerator has a mass of 143.5 kg , including the food in it. It is stand

Question

Your refrigerator has a mass of 143.5kg , including the food in it. It is standing in the middle of your kitchen, and you need to move it. The coefficients of static and kinetic friction between the fridge and the tile floor are 0.753  and 0.663 , respectively. What is the magnitude of the force of friction acting on the fridge, if you push against it horizontally with a force of each magnitude?

a) 883. N 883.N

Please include a multiplication sign (*) to indicate that two units are being multiplied.

b) 996. N

c) 1260. N

1260.N

Explanation / Answer

max. static friction = 0.753 x 143.5 x 9.8 = 1058.95 N

max. kinetic friction = 0.663 x 143.5 x 9.8 = 932.38 N

to move need a force greater than static friction and after moving kinetic friction will act.

a) will not move : 883 N

b) will not move : 996 N

c) will move : 932.38 N

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