Menu Close

Here you can find solved numerical problems on Rotatory and Circular Motion included in the new course of Physics, Grade 11.

S.No Description of the Question
Problem 1 If the plate microwave oven 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 minutes cooking period.
See Solution
Problem 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 is the angular acceleration and the stopping time?
See Solution
Problem 3 A string 1 m long is used to whirl a 100 grams stone in a horizontal circle at a speed of 2 m/s. Find the tension in the string.
See Solution
Problem 4 The moon revolves around the earth in almost a circle of radius 382400 Km in 27.3 days. What is the centripetal acceleration?
See Solution
Problem 5 A modern F1 car can accelerate from 0 to 62 miles/h (100 km/h) in 2.50 s. What is the angular acceleration of its 170 mm radius wheel?
See Solution
Problem 6 An electric motor is running at 1800 rev/min. It comes to rest in 20 s. If the angular acceleration is uniform find the number of revolutions made before stopping.
See Solution
Problem 7 What is the moment of inertia of a 100 kg sphere whose radius is 50 cm.
See Solution
Problem 8 A rope is wrapped several times 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?
See Solution
Problem 9 What is the K.E of a 5 kg solid ball whose diameter is 15 cm if it rolls across a level surface with a speed of 2 m/s?
See Solution
Problem 10 A cylinder of 50 cm diameter at the top of an incline 29.4 cm high and 10 m long is released and rolls down the incline. Find the linear and angular speed at the bottom. Neglect friction.
See Solution
Problem 11 A disc without slipping rolls down a hill of vertical height 1000 cm. If the disc starts from rest at the top of the hill, what is its magnitude of velocity at the bottom?
See Solution
Problem 12 A motor car is traveling at a speed of 30 m/s. If its wheel has a diameter of 1.5 m, find its angular speed in rad/s and rev/s.
See Solution

Leave a Reply

Your email address will not be published. Required fields are marked *