Embibe Experts Solutions for Chapter: Simple Harmonic Motion, Exercise 1: KCET (UG) 2020

A pendulum oscillates simple harmonically and only if
i. The size of the bob of pendulum is negligible in comparison with the length of the pendulum
ii. The angular amplitude is less than $15°$

A piston is performing $\mathrm{S}.\mathrm{H}.\mathrm{M}.$ in the vertical direction with a frequency of $0.5 \mathrm{Hz}$. A block of $10 \mathrm{kg}$ is placed on the piston. The maximum amplitude of the system such that the block remains in contact with the piston is

A tray of mass $12 \mathrm{kg}$ is supported by two identical springs as shown in figure. When the tray is pressed down slightly and then released, it executes SHM with a time period of $1.5 \mathrm{s}$. The spring constant of each spring is