Q. What kind of motion can a rigid body have?
The two types of motion a rigid body can undergo are;
Translational motion is motion that involves the sliding of an object in one or more of the three dimensions: x, y or z. But an object can still be moving even when it's just sitting at a particular x-, y- and z-coordinate; it can still spin.
Rigid Body and Its Motions
By definition a rigid body consists of many mass points (m) located at different points (r. ) but. (r. -r, ) is fixed so it neither changes shape nor size as it moves. This buys considerable simplification in describing the two types of motion it can haveThe two types of motion a rigid body can undergo are;
- Translational Motion
- Rotational Motion
Translational motion is motion that involves the sliding of an object in one or more of the three dimensions: x, y or z. But an object can still be moving even when it's just sitting at a particular x-, y- and z-coordinate; it can still spin.
Rotational motion is where an object spins around an internal axis in a continuous way. An ice-skater can do this by spinning on the spot. She will give herself rotational energy. And because energy is always conserved and a smaller object must spin faster to have the same energy, when she moves her arms in towards her body, her rotation speed will increase - the spinning will get faster and faster.
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