A block of mass 10kg pushed by a horizontal force F on a horizontal rough plane moves with an aceleration 5ms^(-2). When force is doubled, its acceleration becomes 18 ms^(-2). The coefficient of friction is (g=10 ms^(-2)).

A block of mass 10kg pushed by a horizontal force F on a horizontal ro

1.	A block of mass 10kg pushed by a horizontal force F on a horizontal rough plane moves with an aceleration 5ms^(-2). When force is doubled, its acceleration becomes 18 ms^(-2). The coefficient of friction is (g=10 ms^(-2)).
Answer» `0.8` `0.2` `0.4` `0.6` ANSWER :A