Answered: 4.4 • A man is dragging a trunk up the…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 7P: A 9.00-kg hanging object is connected by a light, inextensible cord over a light, frictionless...

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Question

In the end of the Chapter 4 Problem 4.4 of your book consider that the trunk has mass M travels at a constant velocity along a frictionless inclined and the angles involved are θ_i and θ_s, where θ_s corresponds to the angle with respect to the direction of motion and θ_i is the angle of the inclined. What are the simplified expressions for the tension on the rope and the normal force on the trunk in terms of M, g and the angles?

T = ___ g ____ (θ_i)/ _____

n = (Mg)( _____ (θ_i) _____ θ_s+ _____ )

4.4 • A man is dragging a trunk up the
73
loading ramp of a mover's truck. The
ramp has a slope angle of 20.0°, and
the man pulls upward with a force F
whose direction makes an angle of 30.0°
with the ramp (Fig. E4.4). (a) How large a force F is necessary for the
component F, parallel to the ramp to be 90.0 N? (b) How large will the
component F, perpendicular to the ramp be then?
Figure E4.4
F
30.0
20.0°

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