A) \[6.25\times {{10}^{5}}N\]
B) \[26.5\times {{10}^{4}}N\]
C) \[6.25\times {{10}^{3}}N\]
D) \[2.65\times {{10}^{4}}N\]
Correct Answer: C
Solution :
From the relation \[Fs=\frac{1}{2}m{{v}^{2}}-\frac{1}{2}m{{u}^{2}}\] \[\therefore \] \[-F(1)=\frac{1}{2}\left( \frac{50}{1000} \right)[{{(0)}^{2}}-{{(500)}^{2}}]\] \[-F=-\frac{25}{1000}\times 500\times 500\] \[F=6.25\times {{10}^{3}}N\]You need to login to perform this action.
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