Question

In the figure, at the free end of the light string, a force $F$ is applied to keep the suspended mass of $18$\mathrm { kg }$ at rest. Assuming

• A. $240N$
• B. $120M$
• C. $180M$
• D. $240M$

Answer 1

The correct option is A $240N$

$3T=180$

or, $T=60N$

Now, $F=T=60N$

Therefore ,total force on ceiling is $4T=240N$

Hence, Option $A$ is correct.