*64. P Ball A is attached to one end of a rigid massless rod, whilean identical ball B is attached to the center of the rod, as shown in thefigure. Each ball has a mass of m = 0.50 kg, and the length of each halfof the rod is L = 0.40 m. This arrangement is held by the empty end andis whirled around in a horizontal circle at a constant rate, so that eachball is in uniform circular motion. Ball A travels at a constant speedof va = 5.0 m/s. Concepts: (i) How many tension forces contribute tothe centripetal force that acts on ball A? (ii) How many tension forcescontribute to the centripetal force that acts on ball B? (iii) Is the speedof ball A the same as that of ball B? Calculations: Find the tension ineach half of the rod.(a)-2L-(b)BTA(c)Problem 64

Given The mass of each ball is mA = mB = 0.5 kg. The distance from the center and the ball B is LB…

Answered: *64. P Ball A is attached to one end of…

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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A plane with a wingspan of d = 16 m loses control in flight and begins to spiral in a circle around the cockpit while in a vertical dive. It completes one rotation every t = 3.1 s.
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Your roommate is working on his bicycle and has the bike upside down. He spins the 56.0 cmcm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. What is the pebble's acceleration? Express your answer with the appropriate units. The answer is NOT 110 49.7 49.8 or 0.63
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A disk has mass M = 1.0 kg and radius, R = 0.3 m is free to rotate about a fixed axle through its center. Since the axle is fixed, the center of mass of the disk does not move. The disk is initially not rotating. A student wraps a string 5 times around the perimeter of the disk and then pulls the string with a constant force of F = 2.0 N, as shown in the figure below. F= 2N E R=0.3m I=įmr? The student pulls on the string until it is completely unwound, and the string does not slip on the disk as it is pulled. After the string has unwound, what is the angular speed of the disk w : OA. W = 54.9 radians/sec OB. W = 32.8 radians/sec OC. 29 radians/sec O D w = 17.6 radians/sec 6.3 radians/sec
can you do (c) and (d)?
Multiple-Concept Example 7 deals with the concepts that are important in this problem. A penny is placed at the outer edge of a disk (radius = 0.168 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.57 s. Find the minimum coefficient of friction necessary to allow the penny to rotate along with the disk. μs = Number Type your answer here Units Choose your answer here
A small block on a frictionless, horizontal surface has a mass of 2.30x10-2 kg. It is attached to a massless cord passing through a hole in the surface (Figure 1). The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of 2.87 rad/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.150 m. Model the block as a particle. Figure ▼ Express your answer with the appropriate units. AK = 2.8210-² Part D μA W = Submit Previous Answers Request Answer Submit 3 X Incorrect; Try Again; 3 attempts remaining → How much work was done in pulling the cord? Express your answer with the appropriate units. HÅ -0.0123 Provide Feedback J PHO ? J 0 PE ? Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Constants Next >
A uniform disk of radius R is free to rotate about its central axis. A mass m is hung vertically from the disk at a distance 2/5 R from the axis. R 2R/5 m What is the magnitude of the force F (the solid-lined arrow in the figure) which must be applied to prevent the disk from rotating? Omg O 3mg/5 O2mg/5 O 5mg/2
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