Complete the following statement: When determining the net torque on a rigid body, only the torques due to forces that form action-reaction pairs as in applying Newton's third law of motion are considered. ○ only forces that are either parallel or perpendicular to the lever arm are considered. internal forces are considered. O external forces are considered. both internal and external forces are considered.

Complete the following statement: When determining the net torque on a rigid body, only the torques due to forces that form action-reaction pairs as in applying Newton's third law of motion are considered. ○ only forces that are either parallel or perpendicular to the lever arm are considered. internal forces are considered. O external forces are considered. both internal and external forces are considered.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter14: Static Equilibrium, Elasticity, And Fracture

Section: Chapter Questions

Problem 17PQ

See similar textbooks

Similar questions

Assume a single 300-N force is exerted on a bicycle frame as shown in Figure OQ10.5. Consider the torque produced by this force about axes perpendicular to the plane of the paper and through each of the points A through E, where E is the center of mass of the frame. Rank the torques A, B, C, D, and E from largest to smallest, noting that zero is greater than a negative quantity. If two torques are equal, note their equality in your ranking. Figure OQ10.5
Answer yes or no to the following questions. (a) Is it possible to calculate the torque acting on a rigid object without specifying an axis of rotation? (b) Is the torque independent of the location of the axis of rotation?
When tightening a bolt, you push perpendicularly on a wrench with a force of 165 N at a distance of 0.140 m from the center of the bolt. How much torque are you exerting in newton-meters (relative to the center of the bolt)?
Under what conditions can a rotating body be in equilibrium? Give an example.
In analyzing the equilibrium of a flat, rigid object, you are about to choose an axis about which you will calculate torques. Which of the following describes the choice you should make? (a) The axis should pass through the objects center of mass. (b) The axis should pass through one end of the object. (c) The axis should be either the x axis or the y axis. (d) The axis should pass through any point within the object. (e) Any axis within or outside the object can be chosen.
What three factors affect the torque created by a force relative to a specific pivot point?
(a) When opening a door, you push on it perpendicularly with a force of 55.0 N at a distance of 0.850m from the hinges. What torque are you exerting relative to the hinges? (b) Does it matter if you push at the same height as the hinges?
A light triangular plate OAB is in a horizontal plane. Three forces,F1 =10 N, F2 = 6.1 N, and F3 = 7N act on the plate, which is pivoted about a vertical axis through point O. In the figure, consider the counterclockwise sense as positive. The sum of the torques about the vertical axis through point O, acting on the plate due to forces F1, F2, and F3, is closest to: (the answer's unit is Nm)
2.A What torque does a force of 18 N exert if it is exerted perpendicular to a wrench anddistance of 0.15 m from the axis of rotation? Note that T = r x Fsinθ 2.B What amount of force would be required to cause the same torque if the force isexerted in the same place, but at an angle of 40° from the wrench?
If torque is a vector, with a specific direction in space, what is meant by clockwise and counterclockwise torques? If the sums of these torques on a rigid body are equal, what does this imply physically?
What is the minimum magnitude of torque that can be exerted on a rigid body by a 100.0 N force applied at a point that is 0.1 m from the axis of rotation?
If the three forces applied to the plate are replaced by an equivalent Force-Couple system at point A, determine the equivalent torque, in lb · in. positive counterclockwise. F = 24 lb, P = 17 lb, Q = 15 lb, b = 12 in. and h = 10 in.