Solve the given problem by following the steps below 11. A horizontal force of 80 lb,acts on a 50-lb object suspended by a string. What are the magnitude and directionof the force the string must provide to keep the object at rest? Step 1: Represent the problem by making a sketch of the problem and bygathering all pertinent data given.Step 2: Draw the free body diagram of the object(s) labeling all externalforces acting on the object(s).Step 3: Choose a convenient two coordinate system, resolve all forces intotheir rectangular components.Step 4: Apply the l" condition of equilibrium at each of the two axes.Remember the sign convention. For forces along the x- axis; a forceto the right is positive while a force to the left is negative and for they- axis, an upward force is positive, a downward force is negative.Bear in mind also that the signs indicate the direction of the forces.(refer to the resolution and addition of vectors)Step 5: Solve for your unknown forces. If you have more than one unknownas you often will remember to derive as many independent equationsas the number of unknown forces you have. This will give you a setof simultaneous equation wherein the unknowns can be solved interms of the given quantities. You use algebra as a mathematical tooluntil you are able to solve for what is asked of you in the problem.

For equilibrium horizontal as well as vertical forces must be balanced.

Answered: 1. A horizontal force of 80 lb.acts on…

1. A horizontal force of 80 lb.acts on a 50-lb object suspended by a string. What are the magnitude and direction of the force the string must provide to keep the object at rest?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: Newton's Laws Of Motion

Section: Chapter Questions

Problem 20P: A horizontal force of 95.0 N is applied to a 60.0-kg crate on a rough, level surface. If the crate...

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

Solve the given problem by following the steps below

11. A horizontal force of 80 lb,acts on a 50-lb object suspended by a string. What are the magnitude and direction
of the force the string must provide to keep the object at rest?

Step 1: Represent the problem by making a sketch of the problem and by
gathering all pertinent data given.
Step 2: Draw the free body diagram of the object(s) labeling all external
forces acting on the object(s).
Step 3: Choose a convenient two coordinate system, resolve all forces into
their rectangular components.
Step 4: Apply the l" condition of equilibrium at each of the two axes.
Remember the sign convention. For forces along the x- axis; a force
to the right is positive while a force to the left is negative and for the
y- axis, an upward force is positive, a downward force is negative.
Bear in mind also that the signs indicate the direction of the forces.
(refer to the resolution and addition of vectors)
Step 5: Solve for your unknown forces. If you have more than one unknown
as you often will remember to derive as many independent equations
as the number of unknown forces you have. This will give you a set
of simultaneous equation wherein the unknowns can be solved in
terms of the given quantities. You use algebra as a mathematical tool
until you are able to solve for what is asked of you in the problem.

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