Answer:
\[m=kg;\,\,h=2m;\,\,g=9.8\,\,m/{{s}^{2}};\,Loss\,\,of\,\,P.E.=?\] Loss of P.E. = work done by the weight in falling \[=mgh=10\times 9.8\times 2=196\,\,J\]
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