Kerala Board Solutions for Chapter: Work, Energy and Power, Exercise 3: Exercise 3

Calculate the potential energy (in joules) of a body of mass $1 \mathrm{kg}$ at a height of $6 \mathrm{m}$ from the ground. (Take $g=10 \mathrm{m}/{\mathrm{s}}^2$).

A bird of mass $0.5 \mathrm{kg}$ is flying with a constant speed maintaining the same height of $5 \mathrm{m}$. In this state, if its kinetic energy and potential energy are equal, what is the potential energy (in joules) of the bird? (Take $g=10 \mathrm{m}/{\mathrm{s}}^2$).

A bird of mass $0.5 \mathrm{kg}$ is flying with a constant speed maintaining the same height of $5 \mathrm{m}$. In this state, if the kinetic energy and the potential energy are equal, what is the velocity (in $\mathrm{m}/\mathrm{s}$) of the bird? (Take $g=10 \mathrm{m}/{\mathrm{s}}^2$).