Question

a bag of wheat weighs 200kg . to what height should it be raised so that its potential energy may be 9800j ? Take g = 9.8 ms^-2.

Answer 1

$\mathfrak{solution}$

Given :-


potential energy , P. E = 9800 J

m = 200 kg

$g \: = 9.8 {ms}^{ - 2}$

h = ?

already we know

P. E = mgh


$h \: = \frac{P. E }{mg} \\ \\ = \frac{9800}{200 \times \: 9.8 } \\ \\ = 20m$

therefore height should it be raised equal to 20 m .


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