Question

In the figure shown,a man lifts a weight $W=400N$ by pulling down on a rope with a force $F$. The vale of tension in massless threads $A$ and $B$, and the force $F$ are (if the weight is lifted with constant speed) are respectively

• A. $400N,400N,200N$
• B. $200N,200N,400N$
• C. $400N,200N,400N$
• D. $100N,100N,200N$

Answer 1

The correct option is A $400N,400N,200N$

On balancing the forces

$W=2FW=T$

So, $T=400NF=200N$