A mass of 0.5 kg is just able to slide down the slope of an inclined rough surface when the angle of inclination is `60^(@)`. Th

A mass of 0.5 kg is just able to slide down the slope of an inclined rough surface when the angle of inclination is `60^(@)`. The minimum force necessary to pull the mass up the incline along the line of greatest slope is : (Take `g=10m//s^(2)`)
A. 20 N
B. 9 N
C. 100 N
D. 1 N

A mass of 0.5 kg is just able to slide down the slope of an inclined rough surface when the angle of inclination is `60^(@)`. The minimum force necess

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