m is lifted up by pulling the other end of the rope with a constant downward force F=2mg. The acceleration of m is the same in both cases.

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The pulley arrangements of figures (a) and (b) are identical. The mass of the rope is negligible. In Fig. (a), the mass m is lifted up by attaching a mass 2m to the other end of the rope. In Fig. (b), m is lifted up by pulling the other end of the rope with a constant downward force F=2mg. The acceleration of m is the same in both cases.
14
Feb
The pulley arrangements of figures (a) and (b) are identical. The mass of the rope is negligible. In Fig. (a), the mass m is lifted up by attaching a mass 2m to the other end of the rope. In Fig. (b), m is lifted up by pulling the other end of the rope with a [...]
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Tags: m is lifted up by pulling the other end of the rope with a constant downward force F=2mg. The acceleration of m is the same in both cases. , the mass m is lifted up by attaching a mass 2m to the other end of the rope. In Fig. (b) , The pulley arrangements of figures (a) and (b) are identical. The mass of the rope is negligible. In Fig. (a) ,