ROTATIONAL AND CIRCULAR MOTION

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Created on By buzzerkings

Rotational and Circular Motion

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The angular velocity for daily rotation of the earth is:

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 A child riding on a large merry-go-round, travels a distance of 3000m in a circle of diameter 40m. The total angle through which she revolves is:

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A wheel starts from rest and has an angular acceleration of 4.0 rad/s². When it has made 10 rev its angular velocity is:

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 The centripetal acceleration of a car travelling at constant speed around a frictionless circular track:

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 Radian is a unit of angular displacement which can also be measured in degrees. How many radians are equal to one degree? 

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When a body moves in a circle the angle between its linear velocity and angular velocity is always: 

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A wheel of radius 1 m covers an angular displacement of 180. Its linear displacement is

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Linear velocity or tangential velocity of any particle moving in a circular path of radius 2 m with angular velocity 8 rads-1  will be

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The force required to bend the normally straight path of a particle into a circular path is Called_____force. 

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A stone ties to the end of a string 1m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolution in 44 seconds, what is the magnitude and direction of acceleration of the stone

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A particle of mass m is executing uniform circular motion on a path of radius r. If p is the magnitude of its linear momentum. The radial force acting on the particle is

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A stone of mass 250 g is tied to the end of a string of length 1.0 m. It is whirled in a horizontal circle with a frequency of 30 rev./min. What is the tension in the string?

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If the radius of the circular path of a moving body is half without changing speed of rotation then the Fc becomes

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A car of mass 1000kg traveling at 40 ms-1 rounds a curve of radius 100m. what is the Force

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The direction of centripetal force is

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A body of mass 5 kg is moving in a circle of radius 1m with an angular velocity of 2 radian/sec. The centripetal force is

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A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed, the tendency to overturn is

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A car is moving with high velocity when it has a turn. A force acts on it outwardly because of

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A particle revolves round a circular path with a constant speed. The acceleration of the particle is

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The force required to bend the normally straight path of a particle into a circular path is called _____force.

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 The mud flies off the tyre of a fast moving car in the direction

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 A stone of mass m tied to a string of length l is rotated in a circle with the other end of the string as the centre. The speed of the stone is v. If the string breaks, the stone will move

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A cycle wheel of radius 0.4m completes one revolution in one second then the acceleration of a point on the cycle wheel will be

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A 500 kg car takes a round turn of radius 50 m with a velocity of 36 km/hr. The centripetal force is 

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Work done due to centripetal force for circular motion will be:

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 When a wheel Im in diameter makes 30 rev/min, the linear speed of point on its rim in ms-1 is

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The acceleration of a motor car is 8 m/s². If the diameter of its wheel be 2m. It's angular acceleration will be

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 A point on the rim of a wheel 4 m in diameter has a velocity of 1600 cm/ s. The angular -velocity of the wheel is 1

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For a particle in uniform circular motion the relation a = r 𝛼 of accelerations hold. The acceleration 'a'

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If the position vector of a particle is r = (3i+4]) meter and its angular velocity is ω=(j+2k) rad/sec then its linear velocity is (in m/s).

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 If a car moves with a uniform speed of 2 m s-1 in a circle of radius 0.4 m. Its angular speed is

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The linear and angular velocities of a particle moving about the centre of a circle of radius r, are related by

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Linear velocity or tangential velocity of any particle moving in a circular path of radius 2 m with angular velocity 8 rad/s will be:

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 A wheel of radius 1 m covers an angular displacement of 180. Its linear displacement is 

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A body moves in a circle with increasing angular velocity. At time t= 6sec, the angular velocity is 27rad/s. What is the radius of circle made by the body where linear velocity is 81cm/s?

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Which of the following gives the relationship between linear velocity and angular velocity?

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An object is moving along a circular path of radius 4m. What will be its angular dispiacement if it moves 14m on this circular path?

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When a body moves in a circle, the angle between its velocity and angular velocity is always

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A body moving along the circumference of a circle, completes two revolutions. If the radius of the circular path is r, total angular displacement covered is

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 If a wheel of radius r turns through an angle of 30°, then the distance through which any point on its rim moves is

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The angular velocity of the minute hand of a clock is

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The shaft of a motor rotates at a constant angular speed of 360rev/min. Angle turned through in 1 sec in radian is

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The angular speed in radian/hour for daily rotation of the earth is

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Ten seconds after an electric fan is turned on, the fan rotates at 300rev/min. Its average angular acceleration is

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For positive angular displacement the rotation would be

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 The angular speed of a fly wheel making 120 revolutions/minute is

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A flywheel gains a speed of 540 rpm in 6 second. Its angular acceleration is

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The ratio of angular frequency and linear frequency is

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 If a rotating body is moving counter clockwise, direction of angular velocity will be

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 Radian is a unit of angular displacement which can also be measured in degrees. How many radians are equal to one degree?

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Angular speed of a particle increases from 2rad/s to 4 rad/s across any two diametrically opposite positions. Its angular acceleration will be?

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The angular velocity of a particle rotating in a circular orbit 100 times per minute is

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The ratio of angular speeds of minute hand and hour hand of a watch is

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The racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speeds are such that each makes a complete circle in the same length of time. The ratio of the angular speed of the first car to that of the second car is

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