Question

In the figure at the free end a force $F$ is applied to keep the suspended mass of $18kg$ at rest:

• A. $180N$
• B. $90N$
• C. $360N$
• D. $240N$

Answer 1

The correct option is D $240N$

$3T=180$

or $T=60N$

Now, $F=T=60N$

Therefore,

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

Hence, Option $D$ is correct.