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What is the difference between a contact force and a field force? List all the forces presented in Chapters 1 through 22. Which are field forces? Which are contact forces? Which forces are macroscopic manifestations of the
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The difference between a contact force and a field force with example and the forces which are macroscopic manifestation of the electromagnetic force.
Answer to Problem 1PQ
The object has to be in direct contact for contact force not for field forces. Normal force, buoyant force, spring, friction are examples of contact forces and gravity is for field forces.
Explanation of Solution
For a contact force between two objects, the object must be in direct contact. If the objects are not in direct contact, the contact force cannot be exerted. The normal force, buoyant force, spring, friction are examples of contact forces. These forces are macroscopic manifestation of electromagnetic force.
The field forces can be exerted even if the objects are not in direct contact. It can even exist in a very large separation between the objects. Gravitational force is an example of field force.
Conclusion:
The object has to be in direct contact for contact force not for field forces.
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Chapter 23 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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- 6. Two identical charged particles of mass 70 grams are at the ends of strings that are the same length l = 10 cm attached to the ceiling. The charged particles repel, as shown in the sketch below: The angle between the strings is 0 = 20°. IS Use force analysis to develop equations that describe the balance of forces along both the horizontal and the vertical directions. If we let the symbols 'FG' and 'FE' represent gravitational and electric force magnitude, type the symbol in the first answer box that corresponds to the force that balances out the tension along the x direction. In the second answer box type in the symbol for the force that balances out the tension along the y direction. FT.X FTY Submit All Answers Last Answer 1: 0.6867 N Last Answer 2: -0.12021 N Incorrect, tries 10/18.arrow_forwardwhich is correct?arrow_forwardpls help me with the following question asap and make sure your answer is correct, thank you A. Find the magnitude of the net electrical force the electrons will exert on the proton. Express your answer in newtons. B. Find the direction of this force as the angle measured counterclockwise from the +x-axis directed horizontally to the right. Express your answer in degrees.arrow_forward
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