A lever.
Fulcrum * * * * * The fulcrum is the fixed point. The bar is a lever. Admitedly, it would help if questions were asked properly.
The bar is a rigid straight finite object that is attached to one fixed point. The bar can be moved but the point where it is attached must stay where it is. In theory, therefore, the bar can be rotated around that fixed point in any direction. At the level of mathematics that your question suggests, the bar is movable in only one plane.
A lever. The fixed point is called the fulcrum.
fulcrum
Wedge
A lever.
A lever.
A pendulum is made up of a stiff bar that moves freely on a fixed point. The bar is attached to a pivot point and swings back and forth due to gravity acting upon it. Pendulums are commonly used in clocks and scientific experiments to measure time or gravity.
A lever is a simple machine but it is made out of a stiff bar that moves freely around a fixed point.
A lever is a simple machine but it is made out of a stiff bar that moves freely around a fixed point.
A fixed point.
A fixed point around which a rod moves is called a pivot point or fulcrum. It serves as a point of support for the rod to rotate or pivot around without translating.
A lever.
A lever.
Fulcrum * * * * * The fulcrum is the fixed point. The bar is a lever. Admitedly, it would help if questions were asked properly.
The bar is a rigid straight finite object that is attached to one fixed point. The bar can be moved but the point where it is attached must stay where it is. In theory, therefore, the bar can be rotated around that fixed point in any direction. At the level of mathematics that your question suggests, the bar is movable in only one plane.