In sample Prob. 5.03, what is the y-component of the acceleration of block H?а.same (magnitude & direction) as x-component of acceleration of blockb.same magnitude but in theperpendicular direction to the x-component of acceleration of blockc. larger magnitude and perpendiculardirection to the x-component ofacceleration of block S, since itmoves downwardsd. smaller magnitude and samedirection as x-component ofacceleration of block S, since it issmaller weight than block S. Sample Problem 5.03 Block on table, block hangingFigure 5-12 shows a block S (the sliding block) with massM = 3.3 kg. The block is free to move along a horizontalfrictionless surface and connected, by a cord that wraps overa frictionless pulley, to a second block H (the hangingblock), with mass m = 2.1 kg. The cord and pulley have neg-ligible masses compared to the blocks (they are "massless").The hanging block H falls as the sliding block S acceleratesto the right. Find (a) the acceleration of block S, (b) the ac-celeration of block H, and (c) the tension in the cord.Block SBlock HQ What is this problem all about?You are given two bodies-sliding block and hangingblock-but must also consider Earth, which pulls on bothbodies. (Without Earth, nothing would happen here.) A to-tal of five forces act on the blocks, as shown in Fig. 5-13:Figure 5-13 The forces acting on the two blocks of Fig, 5-12.certain time, block S moves 1 mm to the right in that sametime. This means that the blocks move together and theiraccelerations have the same magnitude a.1. The cord pulls to the right on sliding block S with a forceof magnitude T.2. The cord pulls upward on hanging block H with a forceof the same magnitude T. This upward force keeps blockH from falling freely.Q How do I classify this problem? Should it suggest a par-ticular law of physics to me?Yes. Forces, masses, and accelerations are involved, andthey should suggest Newton's second law of motion, F=ma. That is our starting key idea.3. Earth pulls down on block S with the gravitational forceFs, which has a magnitude equal to Mg.4. Earth pulls down on block H with the gravitational forceFt, which has a magnitude equal to mg.5. The table pushes up on block S with a normal force Fy.Q IfI apply Newton's second law to this problem, to whicbody should I apply it?We focus on two bodies, the sliding block and the hangiblock. Although they are extended objects (they are rpoints), we can still treat each block as a particle becauevery part of it moves in exactly the same way. A second bidea is to apply Newton's second law separately to each bloThere is another thing you should note. We assume thatthe cord does not stretch, so that if block H falls 1 mm in aSlidingblock SQ What about the pulley?We cannot represent the pulley as a particle becadifferent parts of it move in different ways. When wecuss rotation, we shall deal with pulleys in deMeanwhile, we eliminate the pulley from consideratioassuming its mass to be negligible compared withmasses of the two blocks. Its only function is to changcord's orientation.MFrictionlesssurfaceHangingblock HQ OK. Now how do I apply Fnet = ma to the sliding bRepresent block S as a particle of mass M and drthe forces that act on it, as in Fig. 5-14a. This is the bfree-body diagram. Next, draw a set of axes. It makesFigure 5-12 A block S of mass M is connected to a block H of massm by a cord that wraps over a pulley.

As both are connected with same string, string is inextensible. So both have same magnitude of…

In sample Prob. 5.03, what is the y- component of the acceleration of block H? same (magnitude & direction) as x- component of acceleration of block S b. same magnitude but in the perpendicular direction to the x- component of acceleration of block c. larger magnitude and perpendicular direction to the x-component of acceleration of block S, since it moves downwards d. smaller magnitude and same direction as x-component of acceleration of block S, since it is smaller weight than block S.

In sample Prob. 5.03, what is the y- component of the acceleration of block H? same (magnitude & direction) as x- component of acceleration of block S b. same magnitude but in the perpendicular direction to the x- component of acceleration of block c. larger magnitude and perpendicular direction to the x-component of acceleration of block S, since it moves downwards d. smaller magnitude and same direction as x-component of acceleration of block S, since it is smaller weight than block S.

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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