1: If the Plate of microwave oven distance has a radius of 0.15 m and rotates at 6.0 rev/min calculate the total distance traveled by the fly during a 2.0 min cooking period.  (11m)

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2: A circular drum of radius 40 cm is initially rotating at 400 rev/min. It is brought to stop after making 50 revolutions. What id the angular acceleration and the stopping time? (2.79 rad/s², 150 s)




3: A string 1m long is used to whirl a 100g stone in a horizontal circle at a speed of 2m s⁻¹. Find the tension in the string. ( T = 0.4 N)

4: The moon revolves around the earth in almost a circle of radius 382400 km in 27.3 days. What is the centripetal acceleration? (ac = 0.00271 m s⁻¹)

5: A modern F1 car can accelerate from 0 to 62 mile/h (100km/h) in 2.50 s, What is the angular acceleration of its 170 mm-radius wheels? (65.17 rad s⁻²) 

6: An electric motor is running at 1800 rev min⁻¹. It comes to rest in 20 s. If the angular acceleration is uniform find the number of revolutions it made before stopping. (300 rev) 




7: What is the moment of inertia of a 100 kg sphere whose radius is 50 cm? (10kgm²) 

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8: A rope is wrapped several times around a cylinder of radius 0.2 m and mass 30 kg. What is the angular acceleration of the cylinder if the tension in the rope is 40 N and it turns without friction? (13.3 rad s⁻²) 




9: What is the kinetic energy of a 5.0 kg solid ball whose diameter is 15 m if it rolls across a level surface with a speed of 2m s⁻¹? (14J) 

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10: A cylinder of 50cm diameter at the top of an incline 29.4cm high and 10m long is released and rolls down the incline. Find its linear and angular speeds at the bottom. Neglect friction. (1.96 ms⁻¹, 7.84 rad s⁻¹)  

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11: A disc without slipping  rolls down a hill of vertical height 1000cm. If the disc starts from rest at the top of the hill, what is its magnitude of velocity at the bottom? (11.4 m s⁻¹)

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12: A motor car is traveling at a speed of 30 m s⁻¹. If its wheel has a diameter of 1.5 m, find its angular speed in rad s⁻¹ and rev s⁻¹. (40 rad s⁻¹ 6.36 rev s⁻¹ )

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3. Website for Single National Curriculum Pakistan - 5th Class Notes 

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