2018-10-01_Physics_For_You
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PHYSICS FOR YOU OCTOBER ’18 4 PHYSICS FOR YOU OCTOBER ’ PHYSICS FOR YOU OCTOBER ’18 6 PHYSICS FOR YOU OCTOBER ’ ...
Managing Editor Mahabir Singh Editor Anil Ahlawat Corporate Office: Plot 99, Sector 44 Institutional area, Gurgaon -122 003 (HR) ...
CENTRE OF MASS e centre of mass of a rigid body is an imaginary point at a xed position with respect to the body as a whole. ...
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∫dm=M()massofthebody r M cm = ∫rdm 1 . Note: If an object has symmetric uniform mass distribution about x axis then y coordina ...
Law of Conservation of Angular Momentum If no external torque acts on a system then the total angular momentum is conserved. ie ...
2. Uniform circular disc of mass M and radius R (i) about an axis passing through centre and perpendicular to its plane 1 2 MR^2 ...
Relation between Angular Momentum and Moment of Inertia Angular momentum, L = IZ e angular acceleration D of a rigid body rotat ...
Four particles of mass m 1 = 2m, m 2 = 4m, m 3 = m and m 4 are placed at four corners of a square. What should be the value of ...
60° 30° The magnitude of acceleration of centre of mass of both blocks is (neglect friction everywhere) (a)^31 42 g ...
(a) g L 12 / (b)^3 4 g^12 L / (c)^33 2 12 g L / (d)^3 2 g^12 L / A solid sphere i ...
(b) : The CM of the rod has fallen by l 2 (1 – cos q). ? 'U = – Mg l 2 (c 1 os ) ; 'K =^1 2 IZ^2 = 1 23 2 Ml 2 ...
dm m l = dl 0 The moment of inertia of the elementary mass is given as dI = (dm)r^2 The moment of inertia of the rod, I = ³dI ...
? Decrease in potential energy = MghMg L =−° 2 (c 16 os 0 ) Kinetic energy of rotation = 1 2 1 23 Iωω^2 =×ML^22 [I=ML 2 3 (Becau ...
The velocity versus time curve of a moving particle is given in figure. The maximum acceleration is O C D t (s) v (cm s–1) BA ...
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