Need help Dynamic Problem: Plane Kinetic of rigid bodies.

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SUMMARY

The discussion focuses on calculating the angular acceleration (alpha A) of gear A in a system involving two gears with known moments of inertia. Gear A has a moment of inertia of 10 kg.m², while gear B has a moment of inertia of 20 kg.m². The mass of block C is 50 kg, and the relationship between the angular accelerations of the gears is established through the equation T - Wc = -mC aC, where T is the tension and Wc is the weight of block C. The user seeks clarification on the relationship between alpha A and alpha B, emphasizing the need to understand the rotational dynamics of the gears.

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  • Understanding of rotational dynamics and angular acceleration
  • Familiarity with the concept of moments of inertia
  • Knowledge of Newton's second law applied to rotational systems
  • Basic principles of gear mechanics and their relationships
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Homework Statement



The central moments of inertia of the gears A and B as shown are 10 kg.m2 and 20 kg.m2, respectively. If the mass of the block C is mC = 50 kg and the system is released from rest, determine alpha A of the gear A

fig is attached

Homework Equations



The Attempt at a Solution



I can compute alpha B from the data but how can to compute alpha A? I mean is there an equation related between them?

By the way, about alpha B, did my equation correct?

20 alphaB = 0.15 T
T - Wc = -mC aC
aC = alphaB x 0.15

thx for your helps!

Homework Statement


Homework Equations


The Attempt at a Solution

 

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Hint:

They are gears so they rotate and accelerate at different speeds. Determine relationship.
 

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