26. (II) A person exerts a horizontal force of 42 N on the end of a door 96 cm wide. What is the magnitude of the torque if the force is exerted (a) perpendicular to the door and (b) at a 60.0° angle to the face of the door?

26. (II) A person exerts a horizontal force of 42 N on the end of a door 96 cm wide. What is the magnitude of the torque if the force is exerted (a) perpendicular to the door and (b) at a 60.0° angle to the face of the door?

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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Question

Question 26 Only part A

shown in Fig. 8-42. Assume that a friction torque of
25. (II) Calculate the net torque about the axle of the wheel
(b) How could she
xért more torque?
exerts?
0.60 m·N opposes the motion.
35 N
28 N
8-5
30.
135
31.
12 cm
24 cm
olod
18 N
32
FIGURE 8-42 Problem 25.
26. (II) A person exerts a horizontal force of 42 N on the end
of a door 96 cm wide. What is the magnitude of the torque
if the force is exerted (a) perpendicular to the door and
(b) at a 60.0° angle to the face of the door?
27. (II) Two blocks, each of mass m, are attached to the ends
of a massless rod which pivots as shown in Fig. 8-43.
Initially the rod is held in the horizontal position and then
released. Calculate the magnitude and direction of the
net torque on this system when it is first released.
m
Tabold
FIGURE 8-43 Problem 27.
1nguire

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