1.

A Block slides down cm a rough inclined plane with constant velocity. Find constant force.(a) mg/2 (b) 2mg (c) mg (d) mg/3

Answer»

Correct option is (c) mg 

μmg cosθ = mg sinθ

∴ Total force on plank 

= mg sinθ (along the incline) 

mg cosθ+ (⟂to incline)

= mg (resultant)



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