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‎7. Distinguish between Simple Harmonic Motion and Periodic motion.

‎8. Explain the types of vibrations.
PART-B
Answer two questions from each set :

‎SET 1 : Answer any 2 questions. Each question carries 10 Marks. (2x10=20 Marks)

‎9. Determine the magnitude and direction of the resultant of the forces acting on
the ring as shown in Fig. 2

‎Fig. 2

‎10. Two smooth circular cylinders each of weight 100 N and radius 15 cm are
connected at their centres by a string AB of length 40 cm and rest upon a
horizontal plane as shown in below Fig. 3. The cylinder above them has a weight
200 N and radius of 15 cm. Find the force in the string AB and the pressure
produced in the floor at the points of contact D and E.