A classical mechanics problem by Ramy Allam

Classical Mechanics Level pending

a body of weight 10 KG.WT is placed on an inclined rough plane. when the plane is inclined to the horizontal by angle 30 , the body is about to slide down if the inclination of the plane to the horizontal is to be increased to 60 degree , calculate the least force acting on the body parallel to the line of the greatest slope A) to prevent sliding B) to make the motion about to begin upwards

A)15/4 * root 2 B) 20/3 * root 2 A)11/3 * root 5 B) 20/3 * root 3 A)10/3 * root 3 B) 20/3 * root 3 A)10 root 3 B) 20 * root 3

Ramy Allam by Ramy Allam , 24, Egypt

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