Force F = -4.8 Ni+ 2.8 Nj acts on a small rock with a position vector r = 6.8 m i+ 2.2 mj relative to the origin. In unit vector notation, what is the resulting torque on the rock about the point (2.1,3.1,7.8)m? a. 29.6 (-k) Nm b. 8.5j Nm c. 29.6 k Nm d. -26.5 j Nm

Force F = -4.8 Ni+ 2.8 Nj acts on a small rock with a position vector r = 6.8 m i+ 2.2 mj relative to the origin. In unit vector notation, what is the resulting torque on the rock about the point (2.1,3.1,7.8)m? a. 29.6 (-k) Nm b. 8.5j Nm c. 29.6 k Nm d. -26.5 j Nm

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

Force F = -4.8 Ni+ 2.8 N j acts on a small rock with a position vector r = 6.8 m i+ 2.2 mj relative to
the origin. In unit vector notation, what is the resulting torque on the rock about the point
(2.1,3.1,7.8)m?
a. 29.6 (-k) Nm
b. 8.5 j Nm
c. 29.6 k Nm
d. -26.5 j Nm

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