1.

A65 kg horizontal force is just sufficient to draw 1300 kg block at level table surface at uniform speed. Then, the coefficient of friction is:

Answer»

0.5
5
0.02
0.05

Solution :Here acceleration is zero .: `F_(f) =` APPLIED force =` 65 xx 9.8 N`
Now `F_(f)=mu=(F)/(R)=(65xx9.8)/(1300xx9.8)=0.05`
Hence correct CHOICE is (d)


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