A 30 kg box has to move up an inclined slope of 30° to the horizontal at a uniform velocity of `5 ms^(-1)`. If the frictional force retarding the motion is 150N, the horizontal force required to move up is (`g=10 ms^(-2)`)

Options

A. `300 xx 2/sqrt(3)`N
B. `300 xx sqrt(3)/2` N
C. 300 N
D. 150 N

Answer

A