How to draw FBD (free body diagram) for Atwood's Machine?

Atwood's machine is a common classroom demonstration used to illustrate principles of classical mechanics.

We are able to derive an equation for the acceleration by analysing forces. If we consider a massless, in-extensible string and an ideal massless pulley, the only forces we have to consider are: tension force (T), and the weight of the two masses (W1 and W2).

To find an acceleration we need to consider the forces affecting each individual mass. Using Newton's second law we can derive a system of equations for the acceleration (a).

The drawing of a free-body diagram is an important step in the solving of mechanics problems since it helps to visualize all the forces acting on a single object. The net external force acting on the object must be obtained in order to apply Newton's Second Law to the motion of the object.

Constrained Motion
Atwood Machine,
Pulley Problem,
Pulley with two hanging masses,
Forces and Newton's laws of motion,
Newton's Laws of Motion,
Finding Tension and Acceleration on Atwood Machine,
Constrained Motion,
IIT JEE Main and Advanced,
Application of Newton's Second Law of Motion,
Two masses hanging from the pulley,

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