Net force, tension, acceleration, and magnitude

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SUMMARY

The discussion focuses on a physics problem involving two blocks with masses m1 = 10kg and m2 = 5kg connected by a massless string on a frictionless incline at an angle of θ=30°. The tension in the string is T = 100N. Key calculations include the net force parallel to the incline for m1, which is 51N, and the acceleration of m1, calculated to be 5.1m/s². The applied force Fa required to move the blocks is determined to be 150N.

PREREQUISITES
  • Understanding of Newton's Second Law of Motion
  • Knowledge of free-body diagrams (FBD)
  • Concept of tension in strings and forces on inclined planes
  • Basic trigonometry for resolving forces
NEXT STEPS
  • Study the application of Newton's Second Law in inclined plane problems
  • Learn how to construct and analyze free-body diagrams for multiple connected objects
  • Explore the concept of tension in systems of connected masses
  • Review the effects of gravitational force components on inclined surfaces
USEFUL FOR

Students preparing for physics exams, particularly those focusing on mechanics involving forces, tension, and motion on inclined planes.

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Homework Statement


Two blocks, of masses m1 = 10kg and m2 = 5kg respectively are connected by a massless unstretchable string and are pulled by an applied force Fa, up a frictionless incline which makes an angle of θ=30° with the horizontal. The tension in the string which connects the two blocks is T = 100N. In the figure, note carefully that the m1 = 10kg block is lower on the incline.

Note: This question is in order to study for an upcoming exam. I've posted the answers to each question as well. I'm not sure on this one question how to do it, and would like an explanation. Would greatly help me with studying for my exam coming up!

1.) What is the component, parallel to the incline, of the net force on the block of mass m1 = 10kg? 51N

2.) What is the acceleration of the block of mass m1=10kg? 5.1m/s^2

3.) What is the component, parallel to the incline, of the net force on the block of mass m2=5kg? 25.5N

4.) What is the magnitude of the applied force Fa? 150N

The Attempt at a Solution


Originally I created a free-body diagram for both the masses. Afterwards I got the following:

1.) T = m1gω
100N = 10kg(9.8)ω
1.02(50)N = ω

Note: I know that this is wrong, and I'll be editing this throughout the day as I work on this question trying to figure out how to do this. Any help would be appreciated!
 
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I don't know what ω is supposed to represent. In order for us to better assist, please indicate what yoour FBD attempts were. Apply Newton 2 along the incline to the FBD, after identifying all forces acting parallel to the incline , including the component of the weight acting parallel to the incline.
 

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