Very basic motion law - Newton's 2nd

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In the discussion about Newton's second law, a scenario is presented where a 5 kg object on a frictionless table is connected to a 9 kg hanging object via a pulley. The key question is to determine the acceleration of both objects and the tension in the string. It is clarified that the tension in the string is crucial, as the gravitational force acting on the hanging object will accelerate both masses. A diagram is suggested to visualize the forces at play. Understanding the relationship between the forces and the resulting acceleration is essential for solving the problem.
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Homework Statement



a 5 kg object placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging 9 kg object. Find the acceleration of the two objects and the tension in the string.


Homework Equations



F = ma

The Attempt at a Solution



It just seems to me that if there is no friction the second object on the horizontal table should travel as the same speed that the 9.00 kg object falls. If there is no friction, then I don't see what force would be needed to "pull" the second object across the table, or how it would slow down the 9 kg object.

Thank you!
 
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2clients said:

Homework Statement



a 5 kg object placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging 9 kg object. Find the acceleration of the two objects and the tension in the string.


Homework Equations



F = ma

The Attempt at a Solution



It just seems to me that if there is no friction the second object on the horizontal table should travel as the same speed that the 9.00 kg object falls. If there is no friction, then I don't see what force would be needed to "pull" the second object across the table, or how it would slow down the 9 kg object.

Thank you!

Draw a diagram. If there is tension in the line then whatever force there is from gravity on the hanging weight will be used to accelerate both weights.
 

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