a 55 kg box is accelerated by being pushed across the floor by a force parallel

Question

a 55 kg box is accelerated by being pushed across the floor by a force parallel to the floor with a magnitude of 160N. if the coefficient of kinetic friction between the box and the floor is 0.25, determine the net work done in pushing the box a distance of 7.0 Meters a 55 kg box is accelerated by being pushed across the floor by a force parallel to the floor with a magnitude of 160N. if the coefficient of kinetic friction between the box and the floor is 0.25, determine the net work done in pushing the box a distance of 7.0 Meters a 55 kg box is accelerated by being pushed across the floor by a force parallel to the floor with a magnitude of 160N. if the coefficient of kinetic friction between the box and the floor is 0.25, determine the net work done in pushing the box a distance of 7.0 Meters

Explanation / Answer

F = 160 N  

fk = uk N = uk m g = 0.25 x 55 x 9.8 = 134.75 N  

F_net = F - fk = 25.25 N  

Work done = F_net . d

= 25.25 x 7

= 177 J

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