PhysicsCircular Motion Quiz August 4, 2022August 4, 2022 - by mdcatpk 1 Created on August 04, 2022 By mdcatpk Circular Motion Quiz 1 / 20 The rotational K.E of the hoop is equal to the its translational K.E half than its translational K.E double than its translational K.E 2 / 20 A hoop and disc have same mass and radius. Their rotational K.E are related by an equation K.E hoop = 2K.E disc K.E hoop = K.E disc K.E hoop = 4K.E disc 3 / 20 The critical speed of an artificial satellite is 8 Kms-1 8.1 Kms-1 7.9 Kms-1 4 / 20 Geostationary satellite completes one rotation around the earth in 3 hours 6 hours 24 hours 5 / 20 The radius of geostationary orbit from the centre of the earth is nearly 42000km 36000km 24000 km 6 / 20 When a body moves in a circle, the angle between its linear velocity and angular velocity is always 90° 180° 45° 7 / 20 The direction of the linear velocity of a body moving in a circle is along the axis of rotation along the tangent directed away from the centre 8 / 20 The period of a circular motion is given by T = 2πr/v T = πv T = 2πr 9 / 20 One radian is equal to 57.3° 67.3° 60° 10 / 20 According to Einstein, the gravitational interaction is possible between material objects and electromagnetic radiation only material objects only electromagnetic radiations 11 / 20 The circumference subtends an angle 2π radian π/2 radian 4π radian 12 / 20 The relation between linear and angular acceleration is a = a x a a = r x a a = a x r 13 / 20 Centripetal force performs Minimum work No work Maximum work 14 / 20 When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by Mass of a body Velocity of body The tension in the string 15 / 20 When a body moves in a circle of radius r with linear speed V its centripetal force is mV2/r mV/r2 mV/r 16 / 20 A body can have constant velocity when it follows a Elliptical path Rectilinear path Parabolic path 17 / 20 If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is 5 rad. S-1 4 rad. S-1 2.8 ms-1 18 / 20 In case of planets the necessary acceleration is provided by Gravitational force Frictional force Coulomb force 19 / 20 The span of the broad jump depends upon Mass of the jumper Height of jump Angle of projection 20 / 20 A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is Equal to the weight of the stone Maximum Zero Your score is The average score is 50% LinkedIn Facebook Twitter VKontakte 0% Restart quiz Circular Motion Quiz Check out for more quizzes for mdcat 2022 preperation. Start studying now!
