A) Zero
B) \[\frac{u\,\Delta m}{\Delta t}\]
C) \[\Delta m\times \frac{du}{dt}\]
D) \[u\frac{\Delta m}{\Delta t}+\Delta m\times \frac{du}{dt}\]
Correct Answer: A
Solution :
[a] The force exerted on the truck due to leaking of dust is in \[\frac{\Delta m}{\Delta t}\] vertical upward direction. Since, there is no friction, no horizontal force acts on the truck, hence no forcer is required to keep its uniform motion intact.You need to login to perform this action.
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