17-102. The 25-lb slender rod has a length of 6 ft. Using a collar of negligible mass, its end A is confined to move along the smooth circular bar of radius 3 V2 ft. End B rests on the floor, for which the coefficient of kinetic friction is µg = 0.4. If the bar is released from rest when 6 = 30°, determine the angular acceleration of the bar at this instant. 6 ft 3N2 ft

17-102. The 25-lb slender rod has a length of 6 ft. Using a collar of negligible mass, its end A is confined to move along the smooth circular bar of radius 3 V2 ft. End B rests on the floor, for which the coefficient of kinetic friction is µg = 0.4. If the bar is released from rest when 6 = 30°, determine the angular acceleration of the bar at this instant. 6 ft 3N2 ft

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)...

See similar textbooks

Similar questions

A baseball has a mass of 0.15 kg and radius 3.7 cm. In a baseball game, a pitcher throws the ball with a substantial spin so that it moves with an angular speed of 37 rad/s and a linear speed of 51 m/s Assuming the baseball to be a uniform solid sphere, determine the rotational and translational kinetic energies of the ball in joules. КЕ Frotational KEtranslational
The moment of inertia of an object about a certain axis is 1.2 kg-m2. Initially the object is at rest, and then it is accelerated at a constant rate of 25 rad-s-2. Determine the time required for the object to achieve a rotational kinetic energy of 1.50 kJ.
Real-world application. Equipment: a barbell (above 10 lbs) or a heavy book, a meter stick or Upper another length measuring instrument. Lift the Biceps barbell by doing a bicep curl. Watch the change of arm Barbell the shape of your bicep. What is the role of the bicep in lifting the barbell? Where is it attached to the arm? Consider the axis of rotation to be in the 4.0 cm elbow joint. How far away is the barbell from the axis of rotation? How far is the bicep from the 40 cm axis of rotation? Estimate the force that the biceps muscle exerts on the forearm holding the barbell. What assumptions did you make in working the problem?
(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.
(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
2)4
Current Attempt in Progress A train is rounding a circular curve whose radius is 1.74 x 102 m. At one instant, the train has an angular acceleration of 1.71x103 rad/s² and an angular speed of 0.0541 rad/s. (a) Find the magnitude of the total acceleration (centripetal plus tangential of the train (b) Determine the angle of the total acceleration relative to the radial direction. (a) Number (b) Number eTextbook and Media Save for Later Type here to search C D Units Units O Attempts: 0 of 3 used Submit Amer 247
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…