What is the work done by gravity on block A in 2 seconds after the blocks are released? Pulley is light. (Take g=10m/s2)
Analyze the forces and acceleration of the system:
and .
The net force on the system is , where ².
So, .
The total mass of the system is .
Using Newton's second law , the acceleration ².
Calculate the displacement of block A in Click "Show Answer" to reveal the answer and analysis
Click "Show Answer" to reveal the answer and analysis
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