A 4 kg ball with a 0.5 m radius rolls at a constant 4 rad/s. The rotational inertia of the ball is 0.5 mr2. What is the total energy of the ball? - 8 J - 4 J - 16 J - 12 J
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Q: s an angular velocity of
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Q: A thick cylinder of inner radius 10 cm and outer radius 50 cm rolls at 4 m/s without slipping. If…
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A: mass of bowling ball (m) = 12 kg Radius of ball (r) = 0.20 m Velocity (v) = 5 m/s
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A: Given Data: Number of revolutions (n) = 4.97 rev.Time (t) = 1.27 s. To Determine: (a). The angular…
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- A tire rotates at an angular velocity of 40 rad/s. What angular displacement will the tire undergo if it spins like this for 5 seconds? O 100 rad 8 rad O200 rad O 120 radComputation. A concept car includes a solid disk-shaped flywheel which can be spun up to store rotational kinetic energy. On demand, that stored energy can be converted into the car's translational kinetic energy. Suppose the flywheel has a mass of 380 kg, a radius of 0.4 m, and maximum rotational speed of 70 rev/s. Calculate the 1,593-kg car's maximum speed (starting from) rest if all of its kinetic energy comes from the flywheel. [Tip: Be careful with units.] Umax m/s Record your numerical answer below, assuming three significant figures. Remember to include a as necessary. O Search REYhaving negligible masses in the figure, and Solid rods running along the y-axis connect the three particles. If this system rotates around the x-axis with an angular velocity of 3.00 rad/s, what would be the total rotational kinetic energy? 4.00 kg y = 3.00 m 12 - 2.00 kg y - -2.00 m 3.00 kg y = -4.00 m A) 765 J B) 231 J C) 265 J D) 357 J E) 414 J
- A solid sphere with a radius of 0.38 and a mass 0.29 is set to rotate about its center. After a time of 13.1 s, its rotational kinetic is 20.1 J. What is its constant angular acceleration? The moment of inertia for a solid sphere is I = MR? %3DA wheel has a constant angular acceleration of 5.00 rad, Starting from rest it turns through 300 rads. What is its final angular velocity? O 55.8 rad/s 79.0 rad/s 67.6 rad/s none of the aboveA wheel of radius 1.0 m is rotating with a constantangular speed, ω, of 2.0 rad/s. What is the linear speed,v, of a point on the wheel's rim?A) 0.50 m/sB) 1.0 m/sC) 2.0 m/sD) 4.0 m/s
- A solid sphere with a radius of 0.37 and a mass 0.32 is set to rotate about its center. After a time of 11.8 s, its rotational kinetic is 22.9 J. What is its constant angular acceleration? The moment of inertia for a solid sphere is I =MR? %3DThe three objects shown here all have the same mass M and radius R. Each object is rotating about its axis of symmetry (shown in blue). All three objects have the same rotational kinetic energy. Which one is rotating fastesť? (e) Hollow cylinder (f) Solid cylinder (g) Thin-walled hollow cylinder 1 = MR2 A. Thin-walled hollow cylinder B. solid cylinder C. thin-walled hollow cylinder R2 R1 c iaY D. two or more of these are tied for fastestA physics student walks down a long hall carrying a vibrating 360.0 Hz tuning fork. The end of the hall is closed so that the sound reflects from it. The student hears 5.0 beats per second. How fast is the student walking? Assume that the velocity of sound is 342.0 m/s.
- A solid disk of mass m= 4 kg and radius R= 0.1 m is rotating about its central axis with a constant angular velocity. A point on the rim of the disk at the radius R from the central axis has a tangential speed of v= 4 m/s. What is its rotational kinetic energy? A) 32 J B) 16 J C) 8 J D) 4 J E) 2 JThe rotational inertia of a collapsing spinning star changes to 1/8 its initial value. What is the ratio of the new rotational kinetic energy to the initial rotational kinetic energy? Number Enter your answer in accordance to the question statement Units Choose the answer from the menu in accordance to the question statement minkg m^2/srad/s^2rev/minNo unitskg m^2N mThe following figure shows four bars of equal mass rotating about their center. Rank their rotational kinetic energies from largest to smallest. L Wo 4/12 2010 WAWA 412 240 4 w, 13