Question

An object of mass 40kg is raised to a height of 5m above the ground.What is its potential energy?​ g=9.8m/s²

Answer 1

$\small \underline \bold{For \: an \: object}$-

$\large \underline \bold{Given}$:-

$\: \: \: \: \:$$\sf{mass = 40 \: kg}$

$\: \: \: \: \:$$\sf{height = 5 \: m}$

$\: \: \: \: \: \:$$\sf{g = 9.8 \: m/s^{2}}$

$\large \underline \bold{To \: Find}$:-

$\sf{What \: is \: the \: potential \: energy \: of \: this \: object \: ?}$

$\large \underline \bold{Using \: Formula}$:-

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$$\large\boxed{\sf\red{U = mgh}}$

$\sf{here \: ,}$

$\: \: \: \: \: \: \: \: \: \:$$\sf{U = potential \: \: energy \: (in \: joule)}$

$\: \: \: \: \: \: \: \: \:$$\sf{m = mass \: (in \: kg)}$

$\: \: \: \: \: \: \: \: \: \:$$\sf{g = gravitational \: \: acceleration}$

$\: \: \: \: \: \: \: \: \: \:$$\sf{h = height \: (in \: metre)}$

$\large \underline \bold{Solution}$:-

$\sf{On \: using \: the \: above \: formula}$-

$\: \: \: \: \: \: \: \: \:$$\sf{U = 40\times 9.8\times 5}$

$\: \: \: \: \: \: \: \: \:$$\sf{U = 40\times 5\times 9.8}$

$\: \: \: \: \: \: \: \: \:$$\sf{U = 200\times 9.8}$

$\: \: \: \: \: \: \: \: \:$$\sf{U = 100\times (2\times 9.8)}$

$\: \: \: \: \: \: \: \: \:$$\sf{U = 100\times 19.6}$

$\: \: \: \: \: \: \: \: \:$$\sf{U = 1960 \: J}$

$\: \: \: \: \: \: \: \: \:$$\small \bold{U = 1.96 \: KJ}$

$\sf{potential \: energy \: of \: this \: object \: is \: 1.96 \: killo \: Joule.}$

Answer 2

here is ur answer attached....