A) 49 m
B) 98 m
C) 196 m
D) 392 m
Correct Answer: A
Solution :
\[m=2kg,g=10\,m/{{s}^{2}}.\] If the maximum height reached by the body is ?h?. On reaching it, its \[P.E.=mgh\] This should be equal to the total energy at any instant. i.e., \[mgh=400\,J+580J=980J\] \[\Rightarrow 2\times 10\times h=980\Rightarrow h=\frac{980}{20}=49\,m\]You need to login to perform this action.
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