lons ( this wheel is: rad). A. 2.65 Q.17: The disc in the adjacent figure has radius R and rotates () with an angular speed w about an axle () passing through point o and perpendicular (e) to the plane of the disc. Let w, a and V represent the angular speed, angular acceleration and linear speed, respectively ( A). If points A, B, and C lie at the rim (la) of the disc, then which of the following statements is entirely (S) correct: A. VA= V8 = Vc and wA = We = WC B. VA = VB = Vc and wa > we >Wc B. 50.0 С. 13.7 D. 23.1 E. Zero C. aA >as > ac and VA = VB = Vc D. WA = WB = wcand Vc> VB > VA E. WA> WB> wc and VA> V8 > Vc Q.18: A rigid body rotates around an axis that passes through the origin and perpendicular %3D %3D
Rigid Body
A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.
Rigid Body Dynamics
Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).
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