)ka acts on a pebble with position vector 7 = (1.92 m) - (5.98 m , relative to the origin. Force F = (4.70 N) – (5.35 N What is the resulting torque acting on the pebble about (a) the origin and (b) a point with coordinates (8.32 m, 0, -7.80 m)? Ĵ (a) Number kUnits

)ka acts on a pebble with position vector 7 = (1.92 m) - (5.98 m , relative to the origin. Force F = (4.70 N) – (5.35 N What is the resulting torque acting on the pebble about (a) the origin and (b) a point with coordinates (8.32 m, 0, -7.80 m)? Ĵ (a) Number kUnits

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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rigid body is rotating about an axis. One force F1 acts on the body such that its vector passes through the axis of rotation. Another force F2 acts on it such that it is perpendicular to the axis of rotation and at a point 5cm from the axis. This force F2 is perpendicular to the radius vector at its point of application. Find the net torque on the body. Let F1 = 10N & F2= 5N. a) 0 b) 10.25Nm c) 0.25Nm d) 10Nm
The body in the figure is pivoted at O. Three forces act on it in the directions shown: FA = 11.0 N at point A, 8.20 m from O; FB = 19.0 N at point B, 4.30 m from O; and FC = 16.0 N at point C, 2.40 m from O. Taking the clockwise direction to be negative, what is the net torque about O?
When tightening a bolt, you push perpendicularly on a wrench with a force of 150 N at a distance of 0.125 m from the center of the bolt. Part (a) How much torque are you exerting on the wrench, in newton meters, relative to the center of the bolt? Part (b) What is this torque, in pound-foot?
Force F = (8.55 N )î – (9.95 N )ê acts on a pebble with position vector T (6.87 m )ĵ – (2.53 m )k, relative to the origin. What is the resulting torque acting on the pebble about (a) the origin and (b) a point with coordinates (8.02 m, 0, - 6.52 m)?
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Homework
Suppose you exert a force of 190 N tangential to the outer edge of a 1.665-m radius 76.5-kg grindstone (which is a solid disk). a)What is the torque τ, in newton meters, you are exerting on the grindstone, relative to the center of mass of the grindstone? b)What is the angular acceleration of the grindstone α0, in radians per square second, assuming negligible friction? c)What is the angular acceleration of the grindstone αf, in radians per square second, if there is an opposing frictional force of 20.5 N exerted 0.35 m from the axis?
Show the location of the axis of rotation and r for each force that produces torque in the diagram. Also, check calculations, I am off by 1 degree.
Find the total torque about the A axis due to the forces as shown in Figure (sin 250 = 0.4)