A) \[a>\frac{mg}{\mu }\]
B) \[a>\frac{g}{\mu m}\]
C) \[a\ge \frac{g}{\mu }\]
D) \[a<\frac{g}{\mu }\]
Correct Answer: C
Solution :
When a cart moves with some acceleration toward right, then a pseudo force (ma) acts on block toward left. This force (ma) is action force by a block on cart. Now, block will remain static w.r.t. cart, if frictional force\[\mu R\ge mg\] \[\Rightarrow \]\[\mu ma\ge mg\] [as\[R=ma\]] \[\Rightarrow \]\[a\ge \frac{g}{\mu }\]You need to login to perform this action.
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