Determine the magnitude of the force P that would cause block A to accelerate to the right at 4m/s^2. Neglect friction and the mass of the pulley.

I found answers from the website but I wonder why the acceleration of the 8kg block will be 2m/ms^2. Please help!

 

Transcribed Image Text:

8 kg B 3 kg A P 8 kg B 3 kg A P

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