A 5.5 kg block is pulled along a horizontal floor by a force of magnitude N at an angle of 0 = 30° with the horizontal and you also push on the blo with a force P = 10N at an angle of 0 = 60° with the horizontal. The coefficient of kinetic friction between the block and the floor is µx = 0.25 Calculate (a) the frictional force, frk, on the block from the floor and (b) %3D block's acceleration. (c) If the area of the bottom of the Block was double

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A: Given : d = 2.59 m F1 = 4.87 N F2 = 9.49 N F3 = 2.55 N θ = 60°

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A: Solution:- A) By,   Newton's law:F=maa=Fma=374.8a=7.7 ms2initial speed, u=0S=1.2 m

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Q: Homework problem #4 (Work-Energy section)

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”