Question

Molten-wax of mass $m$ drops on a block of mass $M$, which is oscillating on a frictionless table. Select the correct option.

• A. time period does not change
• B. amplitude increases
• C. time period decreases
• D. time period increases

Answer 1

The correct option is D time period increases

Time period without Molten-wax $\left(T\right)=2\pi \sqrt{\frac{M}{K}}$
Time period with Molten-wax of mass $m$ is $\left(T^{\prime }\right)=2\pi \sqrt{\frac{M+m}{K}}$
Since, the mass increases the time period will increase.