I Review I Constants I Periodic TableThe 0.20 kg puck on the frictionless, horizontal table inthe figure is connected by a string through a hole in thetable to a hanging 1.20 kg block.(Figure 1)Part AWith what speed must the puck rotate in a circle of radius r = 0.40 m if theblock is to remain hanging at rest?Express your answer to two significant figures and include the approprlateunits.HAFigure1 of 1X•10nValuem/s0.20 kgSubmitPrevious Answers Request AnswerX Incorrect; Try Again; 6 attempts remainingNext >Provide Feedback1.20 kg《圓

M Review I Constants I Periodic Table The 0.20 kg puck on the frictionless, horizontal table in the figure is connected by a string through a hole in the table to a hanging 1.20 kg block.(Figure 1) Part A With what speed must the puck rotate in a circle of radiusT = 0.40 m if the block is to remain hanging at rest? Express your answer to two significant figures and Include the approprlate units. HA Figure 1 of 1 X•10 Value m/s V%3D ?圓

M Review I Constants I Periodic Table The 0.20 kg puck on the frictionless, horizontal table in the figure is connected by a string through a hole in the table to a hanging 1.20 kg block.(Figure 1) Part A With what speed must the puck rotate in a circle of radiusT = 0.40 m if the block is to remain hanging at rest? Express your answer to two significant figures and Include the approprlate units. HA Figure 1 of 1 X•10 Value m/s V%3D ?圓

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 5CQ: A pendulum consists of a small object called a bob hanging from a light cord of fixed length, with...

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A pendulum consists of a small object called a bob hanging from a light cord of fixed length, with the top end of the cord fixed, as represented in Figure CQ7.5. The bob moves without friction, swinging equally high on both sides. It moves from its turning point A through point B and reaches its maximum speed at point C. (a) At what point does the bob have non-zero radial acceleration and zero tangential acceleration? What is the direction of its total acceleration at this point? (b) At what point does the bob have nonzero tangential acceleration and zero radial acceleration? What is the direction of its total acceleration at this point? (c) At what point does the bob have both nonzero tangential and radial acceleration? What is the direction of its total acceleration at this point? Figure CQ7.5
There an analogy between rotational and physical quantities. What rotational quantities are analogous to distance and velocity?
A large centrifuge, like the one shown below, is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. (a) At what angular velocity is the centripetal acceleration 10g if the rider is 15.0 m from the center of rotation? (b) The rider s cage hangs on a pivot at the end of the arm, allowing it to swing outward during rotation as shown in the bottom accompanying figure. At that angle below the horizontal will the cage hang when the centripetal acceleration is 10g? (Hint: The arm supplies centripetal force and supports the weight of the cage. Draw a free-body diagram of the forces to see what the angle should be.)
A gymnast does cartwheels along the floor and then launches herself into the air and executes several flips in a tuck while she is airborne. If her moment of inertia when executing the cartwheels is 13.5kgm2 and her spin rate is 0.5 rev/s, how many revolutions does she do in the air if her moment of inertia in the tuck is 3.4kgm2 and she has 2.0 s to do the flips in the air?
A diver off the high board imparts an initial rotation with his body fully extended before going into a tuck and executing three back somersaults before hitting the water. If his moment of inertia before the tuck is 16.9kgm2 and after the tuck during the somersaults is 4.2kgm2 , what rotation rate must he impart to his body directly off the board and before the tuck if he takes 1.4 s to execute the somersaults before hitting the water?
A geosynchronous satellite orbits Earth at a distance of 42,250.O km and has a period of 1 day. What is the centripetal acceleration of the satellite?
A flywheel is rotating at 30 rev/s. What is the total angle, in radians, through which a point on the flywheel rotates in 40 s?
A proton is accelerated in a cyclotron to 5.0106m/s in 0.01 s. The proton follows a circular path. If the radius of the cyclotron is 0.5 km, (a) What is the angular momentum of the proton about the center at its maximum speed? (b) What is the torque on the proton about the center as it accelerates to maximum speed?
one end of a cord is fixed and a small 0.5 kg object is attached to the other end , where it swings i a section of a vertical circle of radius 2 mas shown i figure attached. when teta= 20 degrees, the speed of the object is 8m/s. at this instant, find the tension in the string, find the tangential ad radial components of acceleration, and find the total acceleration. is your answer changed if the object is swinging down toward its lowest point instead of swinging up? explain the answer.
Question: 16 we have pour mases masses op ½ kg the coordina tes with equal distance. D am porm the origin. Calculate. M44SCS lies at kinetic at 1 tad/s when objecta spins. around z anis. enere
magine you are on an amusement park and on a train ride. At some point the train ride follows a horizontal circle of radius r = 5.00 m around a center “O”. At what magnitude of tangential velocity of the train carts do you have a centripetal acceleration with magnitude of 2.5g?g is the standard gravitational acceleration on the surface of theEarth.a. about 2.42 m/sb. about 123 m/sc. about 11.1 m/sd. about 19.8 m/s
ng Course Home pllege.com/course.html?courseld=17255520&OpenVellumHMAC=542b08604d0440e90b83676f5b1111f2#10001 me tamer type or Change Tras a speciaTae, e centripetal acceleration. In this problem we consider a mass moving in a circle of radius R with angular velocity an Review I Constants Part A F(t) = R cos(wt)i + sin(wt)} = R cos(wt)i + R sin(wt)j. What is the velocity of the mass at a time t? You can work this out geometrically with the help of the hints, or by differentiating the expression for T (t) given in the introduction. (Figure 2) The main point of the problem is to compute the acceleration using geometric arguments. (Figure 1) Express this velocity in terms of R, w, t, and the unit vectors i and j. Figure K 1 of 3> > View Available Hint(s) v (t) = 7() Submit Previous Answers X Incorrect; Try Again; 5 attempts remaining Assume that the mass has been moving along its circular path for some time. You start timing P Pearson Copyright © 2022 Pearson Education Inc. All rights…