Question

A block of mass $2kg$ and specific gravity $\frac{5}{2}$ is attached with a spring of force constant $k=100N/m$ and is half dipped in the water. If extension in the spring is $1cm.$ The force exerted by the bottom of the tank on block is (take $g=10m/s^2$ )

• A. $20N$
• B. $19N$
• C. $15N$
• D. $16N$

Answer 1

The correct option is C $15N$

Hence, option $C$ is correct answer.