Calculating Tension in a String: Two Masses on a Horizontal Surface

AI Thread Summary
To calculate the tension in the string connecting two blocks of masses 2kg and 3kg on a horizontal surface with a 10 N force applied to the 3kg mass, Newton's second law is essential. The system experiences acceleration due to the applied force, which must be considered despite the lack of gravity in this scenario. The tension in the string is determined to be 4 N. Understanding the dynamics of the system and the relationship between the masses and the applied force is crucial for solving this problem. The discussion emphasizes the importance of correctly applying Newton's laws in horizontal motion scenarios.
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Homework Statement


Two blocks of masses 2kg (a) and 3kg (b) rest on a smooth horizontal surface and are connected by a taut string of negligible mass. A force of 10 N is applied to the 3kg mass as shown in figure (below). Calculate the tension in the string between them.

The answer is 4N

http://www.noosahill09.com/images/upload1.jpg

Homework Equations


Friction has not been discussed yet, it is in the next chapter.


The Attempt at a Solution


I can figure out how to calculate the tension on a string of a pulley or the tension of a string with a hanging object attached... but because there is no gravity to work out I don't know how to calculate this?

Any help is appreciated!
 
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Write out Newton's second law for both masses.
 


You should also reexamine the part of your subject line that says that there is no acceleration.
 

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