1 Answer

Vituvo · Answer 1 · 2023-08-24T01:28:30+0000

$\implies$ 1115.2 Joules

$\red{\leadsto}\:$
$\textsf{Height\: at \:rest\:}$
$\sf,h_2= 53.0m$

$\green{\leadsto}\:$
$\textsf{Height\: to\:which\;block\:}$
$\sf,h_1= 21.3$

$\maltese$ As the block falls , the change in potential energy will be converted into kinetic energy

$\leadsto$ Potential Energy at rest at height,
h_2 =
$\sf mgh_2$

$\leadsto$ Potential Energy when fell at height,
h_1 =
$\sf mgh_1$

$\\$

$\leadsto$ Kinetic energy= Change in Potential energy = =
$\sf mgh_2-mgh_1$

$\begin{gathered}\implies\quad \sf mg(h_2-h_1) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf mg(53.0-21.3) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf 3.59 * 9.8* (53.0-21.3) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf 3.59 * 9.8* 31.7\\\end{gathered}$

$\begin{gathered}\implies\quad \boxed{\sf{1115.2\: Joules}}\\\end{gathered}$

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