30 Two masses m and m are connected by a light rod of length

Last updated: 6/25/2023

30 Two masses m and m are connected by a light rod of length If rod is rotating about an axis with angular speed o Such that its kinetic energy is minimum then its K E is 1 1 m m 2 mm 2 m m cs p 1 mm 00 3 2 m m 4 m 0 31 A body is rolling down an inclined plane If K E of rotation is 40 of K E of translation then body is 1 Ring 2 Disc 3 Solid sphere 4 Hollow sphere 32 A sphere cannot roll on 1 Rough horizontal surface 2 Smooth inclined plane 3 Smooth horizontal surface 4 All of these 33 A solid sphere has combined linear and rotation motion as shown in figure The velocity of its centre of mass when it starts pure rolling is R radius of 1 2 i 1 3 j K 4 00 34 A vector P is along positive x axis if Q is another vector such that PxQ is zero then Q should be 1 5 297 35 The component of the vector 2 3j along the vector B 1 is 2 3 5 2 4 10 2 36 What is the power of an engine which can lift 600 kg of water per minute from 20 m deep well 1 2 kW 2 3 kW