Two blocks of mass ma and mp, resting on a frictionless234x 201hre connected by a stretched spring and then released(Fig. 7-48). (a) Is there a net external force on the system| before release? (b) Determine the ratio of their speeds, vA/VB .|(c) What is the ratio of their kinetic energies? (d) Describe|the motion of the CM of this system. Ignore mass of spring.mBFIGURE 7-48 Problem 83.

Given data The mass of block A is: mA The mass of block B is: mB The velocity of block A is: vA The…

Answered: Two blocks of mass ma and mp, resting…

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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Q1) A 5 kg block initially at rest is pulled to the right along a horizontal surface by a constant horizontal force of 12 N. (A) Find the speed of the block after it has moved 4 m if the surfaces in contact have a coefficient of kinetic friction of 0.15 as shown in Figure (a). (B) Suppose the force F is applied at an angle 0 as shown in Figure (b). At what angle should the force be applied to achieve the largest possible kinetic energy? (a) (b)
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B -(a,b,c) Ug = -0.287 – 0.43j + 0.86k üc = 0.74i – 0.567 + 0.37k ūp = -0.39i + 0.47j – 0.79k y (-3,0,-2) Find the magnitudes of forces A, B and C if force D is equal to 100 N. Forces A, B, and D are in equilibrium as shown in Fig. Find the magnitudes of forces A, B and C if force D is equal to 100 N. a = 5 6= 4 C = 0 Find (uni} N) unit vec for A Find ( unit N) unit vecfor B find (umit ) unit vecfor to
7.39 - A block with mass 0.50 kg is forced against a horizontal spring of negligible mass, compressing the spring a distance of 0.20 m (Fig. P7.39). When released, the block moves on a hori- zontal tabletop for 1.00 m before coming to rest. The force con- stant k is 100 N/m. What is the coefficient of kinetic friction between the block and the tabletop? Figure P7.39 k-100 N/m m=0.50 kg H0.20m 1.00 m
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O Macmillan Learning A block of mass m = 2.15 kg slides along a horizontal table with speed vo= 1.00 m/s. At x = 0, it hits a spring with spring constant k = 73.00 N/m, and it also begins to experience a friction force. The coefficient of friction is given by μ = 0.100. How far has the spring compressed by the time the block first momentarily comes to rest? Ax = m wwwwwwwww Ax
() THE FOLLOWING QUESTIONS ARE BASED ON THE INFORMATION GIVEN BELOW. The lift of an observatory tower is accelerating upwards with a = 2 m/s2, together with a kid inside it. The moment the lift réaches a speed v = 3 m/s, the kid lets go of a ball that she has been holding in her hand, at a height L= 3 m abovė the lift floor. As you answer the questions, ignore air resistance and treat the ball as a point-mass. (Take g= 9.8 m/s².) A) How long, in seconds, does it take the ball to hit the lift floor? Answer: B) What is the total distance travelled by the ball, in meters, from the moment it is released until it hits the floor? Answer:
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A conservative force Pis in the +z-direction and has magnitude F(z)-a/(z+zo).where a=0.550 N-m² and 0.200 m. Constarts Incorrect: Try Agair: & attempts remaining Part B An object with mass m-0.500 kg is released from restat aD and moves in the direction. It F the only torce acting on the object, what is the object's speed when it reaches z=0400 7 Express your answer with the appropriate units ? A Part A (e) for this force? Let (a)-10-00 What is the potential-energy function Express your answer in terms of , and a VA 2 U(z) - 1.826 Submit Pro Am Best An
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