Applied Mechanics and Graphic Statics
A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is (where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal.)

(2/3) g cos 9
(1/3) g sinB
(2/3) g sin 0
g sin 9

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Applied Mechanics and Graphic Statics
The force acting on a point on the surface of a rigid body may be considered to act

On the periphery of the body
On any point on the line of action of the force
At any point on the surface normal to the line of action of the force
At the centre of gravity of the body

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