Answer: 
Explanation:
Given
Initial angular velocity is 
rate of reduction 
after 17 revolution i.e. 
using 
Insert the values

The x component of the force on an incline plane is m*g*cos(theta) and the y component is mg*sin(theta). The normal force or x component, keeps the object in contact with the plane, and the y component of the force is so we can solve speed, acceleration, distance travelled, etc for the object using conservation of energy.
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