The figure below shows a horizontal bar, of length 6.8 m, with forces acting on it. A 30 N force acts at its left end, point O, in a direction down and to the left, 45 below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30 to the right of vertical. A 20 N force acts at the right end, in a direction down and to the right, 20° below horizontal. 25 N s0 450 3.4 m 10N 30 N (a) What is the net torque (in N m) on the bar about an axis through O perpendicular to the page? magnitude N'm direction counterclockwise (b) What is the net torque (in N m) on the bar about an axis through C perpendicular to the page? magnitude N'm direction counterclockwise

The figure below shows a horizontal bar, of length 6.8 m, with forces acting on it. A 30 N force acts at its left end, point O, in a direction down and to the left, 45 below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30 to the right of vertical. A 20 N force acts at the right end, in a direction down and to the right, 20° below horizontal. 25 N s0 450 3.4 m 10N 30 N (a) What is the net torque (in N m) on the bar about an axis through O perpendicular to the page? magnitude N'm direction counterclockwise (b) What is the net torque (in N m) on the bar about an axis through C perpendicular to the page? magnitude N'm direction counterclockwise

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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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

The figure below shows a horizontal bar, of length 6.8 m, with forces acting on it. A 30 N force acts at its left end, point 0, in a direction down and to
the left, 45° below horizontal. A 25 N force acts at its center, point C, in a direction up and to the right, 30° to the right of vertical. A 20 N force acts at
the right end, in a direction down and to the right, 20° below horizontal.
(25 N
30%
20°
45°
3.4 m
10 N
6.8 m
30 N
(a) What is the net torque (in N- m) on the bar about an axis through O perpendicular to the page?
magnitude
N'm
direction
counterclockwise
(b) What is the net torque (in N- m) on the bar about an axis through C perpendicular to the page?
N m
magnitude
counterclockwise
direction
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