A) 31250 N
B) 41250 N
C) 31750 N
D) 30450 N
Correct Answer: A
Solution :
From kinetic energy relation \[\frac{1}{2}m{{\upsilon }^{2}}=F.s\] or \[F=\frac{m{{\upsilon }^{2}}}{2s}\] \[=\frac{30\times {{10}^{-3}}\times {{(500)}^{2}}}{2\times 12\times {{10}^{-2}}}\] \[=31250\,N\]You need to login to perform this action.
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