A box is placed on the right hand side of a see saw, producing a-389 Nm torque (clockwise). If a second box with weight 76N is placed on the left hand side of the see saw, how far (radius) must it be placed from the pivot point so that the see saw is balanced, Le. in equilibrium? Assume that the force of the box is applied perpendicular (theta 90 degrees) to the see saw Hint remember that for equlibrium, similar to linear forces, the net torgque of the system must be equal to zero. Net torque: for equilibrium: T+T -0
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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