A) 12N
B) 6N
C) Zero
D) 18N
Correct Answer: B
Solution :
[b] Here, rate of fall of sand on conveyer belt,\[\frac{dm}{dt}=2kg\,{{s}^{-1}}\] |
Conveyer belt speed \[v=3\,m{{s}^{-1}}\] |
Force F = ? |
\[F=v\frac{dm}{dt}=3\times 2=6N\] |
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