1
IIT-JEE 1980
MCQ (Single Correct Answer)
+3
-0.75
A block of mass 2 kg rests on a rough inclined plane making an angle of $$30^\circ $$ with the horizontal. The coefficient of static friction between the block and the plane is 0.7. The frictional force on the block is
A
9.8 N
B
0.7$$ \times $$9.8$$ \times $$$$\sqrt 3 $$ N
C
9.8$$ \times $$$$\sqrt 3 $$ N
D
0.7$$ \times $$9.8
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