A 5 kg block is contacting a 3 kg block on a frictionless surface. IF a horizontal force of 8 N is applied from the left to the 5 kg block, what force does the 5 kg block push onto the 3 kg block as they accelerate?
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A 5 kg block is contacting a 3 kg block on a frictionless surface. IF a horizontal force of 8 N is applied from the left to the 5 kg block, what force does the 5 kg block push onto the 3 kg block as they accelerate?
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- In Figure (a), a constant horizontal force F is applied to block A, which pushes against block B with a 21.0 N force directed horizontally to the right. In Figure (b), the same force is applied to block B; now block A pushes on block B with a 13.0 N force directed horizontally to the left. The blocks have a combined mass of 12.0 kg. What are the magnitudes of (a) their acceleration in Figure (a) and (b) force F. ? (a) Number i (b) Number i A B (a) Units Units BA (b)Two buckets of sand hang from opposite ends of a rope that passes over an ideal pulley. Onebucket is full and weighs 120 N; the other bucket is only partlyfilled and weighs 63 N. (a) Initially, you hold onto the lighterbucket to keep it from moving. What is the tension in the rope?(b) You release the lighter bucket and the heavier one descends.What is the tension in the rope now? (c) Eventually the heavierbucket lands and the two buckets come to rest. What is the tension in the rope now? Show your work and explainA 80 kg woman on roller skates pushes a 30 kg girl, also on roller skates, with a force of 100 N. The magnitude of the force exerted by the girl on the woman is O 200 N O 100 N O 50 N O 40 N O 38 N zero
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- A 30.7 kg girl and a 59.8 kg boy are on the surface of a frozen lake, 10.5 m apart. Using a rope, the girl exerts a horizontal 4.20 N force on the boy, pulling him toward her. Calculate the magnitude of the girl's acceleration.Two friends push a sled on snow in opposite directions. One pushes with a force of 190 N, and the other pushes with a force of 130 N. The sled does not move. What is the net force on the sled? (a) 320 N (b) 60 N (c) zero (d) cannot be determinedA 4 kg block is sliding down a vertical wall while being pushed by an external force as shown in the figure. What is the magnitude of the acceleration of the block (in m/s2) if the coefficient of kinetic friction between the wall and the block is uj, = 0.20 and the magnitude of the external force is 20 N? 4 kg 30 X 8.8