So even though the beam will be tracing a large circle around the hinge (or more likely swinging back and forth) we can call this translation? My reasoning was because the center of mass of the board is moving as it swings. Is that correct?.Scott said:
The Centre of Mass of the board would drop and move to the left so that would be looked upon as translation. To avoid this, you would need to (appropriately) raise the elbow joint and move it to the right. Then you would have only rotation.Scott said:
Even though not all movement vectors of the object are moving in space by the same amount in a given direction, we can still call this translation?sophiecentaur said:
Why not? The translation doesn't need to be in a straight line or in a chosen direction. We are talking in terms of translation of the CM.physics gal said:
Yes, you can decompose the same motion into rotation and translation in different ways.physics gal said:
Rotation and translation are two types of movements that can occur at the elbow joint. Rotation refers to the circular movement of the forearm around the upper arm, while translation refers to the back-and-forth movement of the forearm in relation to the upper arm.
Rotation is responsible for bending and straightening the elbow. When the forearm rotates towards the upper arm, the elbow flexes or bends. When the forearm rotates away from the upper arm, the elbow extends or straightens.
Muscles and ligaments play a crucial role in both rotation and translation at the elbow joint. Muscles, such as the biceps and triceps, contract and relax to generate the necessary force for rotation and translation. Ligaments provide stability and help control the range of motion for these movements.
Yes, both rotation and translation can occur simultaneously at the elbow joint. For example, when throwing a ball, the forearm rotates while also translating forward to generate the necessary force for the throw.
Yes, several joints in the body exhibit both rotation and translation movements, including the shoulder, hip, and ankle joints. These movements are essential for performing everyday tasks and activities, such as walking, running, and reaching for objects.