8.Three boxes are connected by stretchless strings and are pulled by a force F as shown in thefigure. Which box has the greatest acceleration?A. AB. BC. CD. They all have the same acceleration.E. The accelerations of B and C are greater than that of A

All the masses are pulled with the same force. All the masses will be moved together as a system…

Answered: 8. Three boxes are connected by…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum And Collisions

Section: Chapter Questions

Problem 19P: The front 1.20 m of a 1 400-kg car is designed as a crumple zone that collapses to absorb the shock...

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Review. A rifle bullet with a mass of 12.0 g traveling toward the right at 260 m/s strikes a large hag of sand and penetrates it to a depth of 23.0 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet.
(a) Give an example of different net external forces acting on the same system to produce different accelerations. (b) Give an example of the same net external force acting on systems of different masses, producing different accelerations. (c) What law accurately describes both effects? State it in words and as an equation.
When an 80.0kg man stands on a pogo stick, the spring is compressed 0.120 m. (a) What is the force constant of the spring? (b) Will the spring be compressed more when he hops down the read?
Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in Figure 4.37 to pull it out. (a) What force would you have to exert perpendicular to the center of the rope to produce a force of 12,000 N on the car if the angle is 2.00°? In this part, explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. (b) Real ropes stretch under such forces. What force would be exerted on the car if the angle increases to 7.00° and you still apply the force found in part (a) to its center? Figure 4.37
A motorcycle and rider have a total mass equal to 300 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of 5 m/s2. What is the net force on the motorcycle?
The front 1.20 m of a 1 400-kg car is designed as a crumple zone that collapses to absorb the shock of a collision. If a car traveling 25.0 m/s stops uniformly in 1.20 m, (a) how long does the collision last, (b) what is the magnitude of the average force on the car, and (c) what is the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity.
7. How much force is needed to pull a spring with a spring constant of 16 N/m a distance of 30 cm?
A 20.0-g ball hangs from the roof of a freight car by a string. When the freight car begins to move, the string makes an angle of 35.0° with the vertical. (a) What is the acceleration of the freight car? (b) What is the tension in the string?
9. On a farm, you pull a 4.3 kg bucket of water up from a well with a force of 55.2 N while a 5N frictional force acts in the opposite direction. Calculate the upward acceleration of the bucket in m/s2
3.Draw a FBD for a mass that is hanging on a spring that is in equilibrium
A 45.3 kg steel box is pushed along the concrete ground. It goes from zero to a speed of 23.3 m/s in 6.3s. How hard (in newtons) is the box being pushed?
17. Three blocks are now arranged vertically as shown.A 40 N is applied to the top of the block to prevent the blocks from falling. Which arrangement will minimize the tension in the two strings (minimize T1+T2) Assume that g = 10 m/s?

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8. Three boxes are connected by stretchless strings and are pulled by a force F as shown in the figure. Which box has the greatest acceleration? A. A B. B C. C D. They all have the same acceleration. E. The accelerations of B and C are greater than that of A