Moment of inertia mastering physics

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SUMMARY

The discussion focuses on calculating the moment of inertia in a physics problem involving two masses (m1 and m2) and a bar with mass (M_bar). The user seeks clarification on their calculations, specifically regarding torque and moment of inertia. The formula presented for acceleration, a = (2*(m1-m2)*g)/((m1+m2)*l), is questioned for its correctness in the context of the problem. Accurate calculations of torque and moment of inertia are essential for solving the problem correctly.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with the concept of torque
  • Knowledge of moment of inertia calculations
  • Basic algebra for manipulating equations
NEXT STEPS
  • Review the principles of torque in rotational dynamics
  • Study the derivation of moment of inertia for various shapes
  • Practice solving problems involving multiple masses and their effects on motion
  • Learn how to incorporate mass distribution in calculations
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and rotational motion, as well as educators looking for problem-solving strategies in teaching moment of inertia concepts.

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Homework Statement



see attachment

Homework Equations





The Attempt at a Solution



Hey can someone please tell me what I've done wrong here.
There is all so a question further down that asks for the same thing but with mass of the bar included.(M_bar)
 

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Your answer is way off. There's no way to tell what you did wrong without seeing
your calculations.
What dit you have for the torque and for the moment of inertia?
 
can you tell me if this is right, a=(2*(m_1-m_2)*g)/((m_1+m_2)*l
 

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