Question

if potential energy on ground is zero, so how much energy will be in a bottom of dig ???​

Answer 1

$potential \: energy \: = mgh \\ \\ hence \\ given. \\ \: its \: 0 \: on \: ground \: \\ \\ z \\ therefore \: mgh \: on \: ground\: = 0 \\ \\ at \: time \: of \: digging \: it \: has \: \: some \: potential \: and \: \\ kentic \: energy \: \\ \\ there \: fore \: at \: time \: of \: digging \: the \: potential \: energy \: is \: \\ = + mgh \: as \: change \: in \: g \: or \: \\ \\ \\ poential \: energy \: = mgh \: > 0 \: beause \: increse \: in \: g \: value$

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