A m₁ = 1.20-kg aluminum block and a m₂ = 7.85-kg copper block are connected by a light string over a frictionless pulley. The two blocks are allowed to move on a fixed steel block wedge (of angle0 = 31.5°) as shown in the figure. (For aluminum on steel, μs = 0.61 and μk = 0.47. For copper on steel, μs = 0.53 and μk = 0.36.)Aluminumm1SteelCopper12e(a) the acceleration of the two blocksm/s²(b) the tension in the stringNNeed Help?Read It

Given DataAluminum block (m1): 1.20 kgCopper block (m2): 7.85 kgAngle (θ): 31.5∘Friction…

Answered: A m₁ = 1.20-kg aluminum block and a m₂…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Two identical springs, A and B, each with spring constant k = 30.7 N/m, support an object with a weight W = 15 N. Each spring makes an angle of θ = 34.8 degrees to vertical, as shown in the diagram. (a) Write an expression for the tension in spring A (which is equal to the tension in spring B) in terms of W and θ. (b) By how much is spring A stretched, in meters?
Three objects are connected as shown in the figure. The strings and frictionless pulleys have negligible masses. The coefficient of kinetic friction is 0.25 and static friction is 0.30. Block A has a mass of 3 kg and block B has a mass of 4 kg. a) What is the maximum mass block C can have before block B will start to move? b) If block C has a mass of 7 kg. and was 1 m above the ground, how long would it take block C to hit the ground starting from rest?
. A 25kg wooden plate is held in place by two strings attached to the ceiling and the wall. The string attached to the ceiling makes an angle 40° with the horizontal and the string attached to the wall makes 90° with the wall. Determine the force in each string.
A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static friction between the sled and the ground is H = 0.603, and the kinetic friction coefficient is µ = 0.403. The combined mass of the sled and its load is m = 336 kg. The ropes are separated by an angle o = 25.0°, and they make an angle 0 = 31.1° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? minimum rope tension: If this rope tension is maintained after the sled starts moving, what is the sled's acceleration? m/s2 acceleration:
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The block shown is pulled across the rough horizontal surface at a constant speed by the force shown. If m=10 kg, F=18, and e = 37°, what is the coefficient of kinetic friction between the block and the surface? consider g = 10 m/s. %3D %3D F m A. 0.3612
Figure 4 shows a block-pulley system to lift heavy objects. Box mı, of mass 10.0 kg, rests on a surface inclined at e =25 °to the horizontal. It is connected by a lightweight cord, which passes over a massless and frictionless pulley, to a bag of rice, which hangs freely as shown. Given coefficient of static friction, 4; and coefficient of kinetic friction, g are 0.40 and 0.15, respectively. mi Figure 4
2 3 Part B 3. A block of steel weighing 5 kg is stationary on a flat surface. A string parallel to the surface is pulled on with just enough force of 25.6N to get the block moving, What is the coefficient of static friction? (g = 9.8 m/s2) Note: F = Us N F = Static friction Hs = coefficient of static friction N = normal force = mg
A 10 m long board that has a mass of 20 kg is held up by two vertical ropes. The left rope is 2 m from the left end of the board, and the other rope is 2 m from the right end of the board. A 40 kg box sits 2 m from the right end. Find the tension in the rope on the left.
What is the moment of friction force f(B) at Babout point A? O A) the moment of friction force f(B) at Babout point A is 220 Ib.ft B) the moment of friction force f(B) at Babout point A is zero O C) the moment of friction force f(B) at Babout point A is 320 Ib.ft D) the moment of friction force f(B) at B about point A is 120 Ib.ft O E) the moment of friction force f(B) at Babout point A is 420 Ib.ft
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