What will be the reading of the spring balance in the given setup? (take \(g=10~\text{m/s}^2\) )
                

1. \(60~\text N\) 
2. \(40~\text N\)
3. \(50~\text N\) 
4. \(80~\text N\) 

Subtopic:  Spring Force |
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Level 2: 60%+
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The system is at rest initially, due to the force of friction acting on \(A\). If the string connecting the lower blocks is cut, the accelerations of the blocks \(A\), \(B\) & \(C\) will be, respectively,
   
1. \(\dfrac g 3\) to left, \(g\) upward, \(g\) downward.
2. zero, zero, \(g\) downward.
3. zero, \(g\) upward, \(g\) downward.
4. \(g\) to right, zero, \(g\) downward.
Subtopic:  Spring Force |
 67%
Level 2: 60%+
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