A water molecule consists of an oxygen atom and two hydrogen atoms. The two O—H bonds are each 0.1 nm long and form an angle of 107◦ with each other. Where is the molecule’s centre of mass located? Consider the mass of the oxygen atom to be 16 times the mass of a hydrogen atom, and place your hydrogen atoms along the x-axis of your coordinate system. [Hint: Draw your coordinate system!].
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).
A water molecule consists of an oxygen atom and two hydrogen atoms. The two O—H bonds are each
0.1 nm long and form an angle of 107◦ with each other. Where is the molecule’s centre of mass located?
Consider the mass of the oxygen atom to be 16 times the mass of a hydrogen atom, and place your
hydrogen atoms along the x-axis of your coordinate system. [Hint: Draw your coordinate system!].
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