A block of mass $2 \,kg$ rests on a rough inclined plane making an angle of $30°$ with the horizontal. The coefficient of static friction between the block and the plane is $ 0.7$. The frictional force on the block is ....... $N$.
A block of mass $2 \,kg$ rests on a rough inclined plane making an angle of $30°$ with the horizontal. The coefficient of static friction between the block and the plane is $ 0.7$. The frictional force on the block is ....... $N$.
- [IIT 1980]
- A
$9.8$
- B
$0.7 \times 9.8 \times \sqrt 3$
- C
$9.8 \times \sqrt 3$
- D
$0.8 \times 9.8$
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