A body of mass 2 kg slides down with an acceleration of 3 m/s2 on a rough inclined plane having a slope of 30. The external force required to take the same body up the plane with the same acceleration will be : (g =10 m/s2) (1) 14 n (2) 20 n
Answers
Answered by
0
Contact force is the resultant of Frictional force and normal reaction force. The frictional force can be calculated as = 0.5 x mgcos theta. = 0.5 x 2 x 10 x root 3 / 2 normal reaction force is Mgcos theta. = 2 x 10 x root 3 / 2
Similar questions