(II) A potter is shaping a bowl on a potter's wheel rotating atconstant angular velocity of 1.6 rev/s (Fig. 8–48). The frictionforce between her hands and the clay is 1.5 N total. (a) Howlarge is her torque on the wheel, if the diameter of the bowlis 9.0 cm? (b) How long would it take for the potter's wheelto stop if the only torque acting on it is due to the potter'shands? The moment of inertia of the wheel and the bowl is0.11 kg•m².FIGURE 8–48Problem 40.

Friction force = 1.5 N initial angular velocity, wi=1.6 rev/s= 1.6×2π rads (a)Torque on the wheel…

Answered: (II) A potter is shaping a bowl on a…

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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(5) For a body to be stationary in a frame of reference, what conditions must be met regarding forces and torques? Explain what not meeting each of the conditions will result in. (a) Show that the moment of inertia of a uniform thin rod (ruler, shaded grey below in figure) of length L and mass M rotating about its center is 1/12 ML² y (m)4 L/2 F -L/2 L/2 X (m) A constant tangential force of F-2 N (shown) is applied at the end to the initially stationary uniform thin rod of mass 2 kg and length L-6m pivoted about its center at the time t=0 s. This will rotate the rod. (b) Calculate the torque (Nm), and (c) the moment of inertia of the rod. (d) Calculate the angular acceleration of the rod (a rads/s²). (e) What is the angular displacement 0 at t = 1s (in radians and in degrees). (f) What is the angular velocity of the rod v at t = 1s. (g) What are the speeds of the tips of the rod at t = Is (they are the same). 0 -L/2 0 00
(7%) Problem 10: A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. Suppose she produces an angular acceleration of 30.5 rad/s² and her lower leg has a moment of inertia of 0.75 kg-m? . What is the force, in newtons, exerted by the muscle if its effective perpendicular lever arm is 2.1 cm? Grade Summary F = | Deductions 0% Potential 100% Submissions tan() sin() cotan() atan() cosh() oDegrees cos() 7 8. 9. НОME Attempts remaining: 10 (0% per attempt) detailed view asin() E 1^^ 4 acos() sinh() cotanh() 5 * acotan() tanh() 2 3 + END - Radians VOl BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: Feedback: 0% deduction per feedback. 1.
Regarding the torque for each upward Tension, shouldn't the distance for each be (4-x), and not (2-x)?
(2) The slender pole AB slides on the surface of the half-cylinder as its lower end A is pulled to the right on the floor with a constant velocity v = 0.5 m/s. If the radius of the half-cylinder is r = 0.2 m, determine the angular acceleration of the pole when x = 0.6 m. Ans: 0.522 rad/sec² CW A
4) A hollow sphere is rolling on a horizontal surface at speed of 5 m/s when it reaches a 20\deg incline. The moment of inertia of the sphere is (a) How far up the incline will it go? (b) How long will it be on the incline before it arrives back at the bottom?
When a diver first leaves the diving platform their body is stretched out. When they tuck, what happens to their angular velocity and why?
16) Angular acceleration can be produced by: (a) Power (b) Torque (c) Pressure (d) 17) The minute hand of a large clock is 3.0 m long. What is its mean angular speed? (a) 1.4 x 10 rads- (b) 1.7 x 103 rads" (c) 5.2 x 103 rads" 18) In vertical circle, the minimum speed of the body at highest point is (a) v = √2gr (b) v = √3gr (c) √5gr 500 Kgm² 19) Moment of Inertia of 100 Kg sphere having radius 50 cm will be (a) 10 Kgm² (b) 5 Kgm² (c) Temperature (d) 1.0 x 10-1 rads-1 (d) 13 = = √gr (d) 2.5 Kgm² 20) A body rotates with a constant angular velocity of 100 rad/sec about a vertical axis. The torque (a) required to sustain this motion will be Zero Nm (b) 21) Torque acting on body determines its (a) Linear acceleration (b) 22) Force and torque are analogue of force (a) (b) Acceleration (c) Each other 23) An elevator moving upward such that it moves with accelerationa=2g, what will be the real weight of a 100 Nm (c) 200 Nm (d) 300 Nm Impulse (c) Angular Acceleration (d) Linear Momentum…

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