Which movement change is made by cranks and cams
Rotary movement.
Cranks and cams are mechanical devices used to convert rotational motion into linear or reciprocating motion. They can be found in various machines and mechanisms, such as engines, pumps, and manufacturing equipment. The primary movement change made by cranks and cams is the conversion from rotary motion to a linear or reciprocating motion.
A crank is a simple mechanism that consists of an arm or rod attached to a rotating shaft. As the shaft rotates, the arm moves in a circular path, which can be used to produce reciprocating motion. This is commonly seen in engines, where the rotation of the crankshaft converts the linear motion of the pistons into rotational motion.
On the other hand, a cam is a special type of rotating or sliding mechanism with an irregular shape. As the cam rotates, it causes a follower (usually a lever or roller) to move in a specific pattern. By designing the shape of the cam, various types of motions can be achieved, such as oscillating, reciprocating, or intermittent linear motions. Cam mechanisms are widely used in machines such as sewing machines and internal combustion engines.
In summary, cranks and cams play a crucial role in transforming rotary motion into linear or reciprocating motion, enabling the operation of many mechanical systems.