Define: a) Pulley of screw
c) wedge
Answers
Answer:
Pulley = pulley is a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used singly or in combination to transmit energy and motion.
Screw= A short, slender, sharp-pointed metal pin with a raised helical thread running round it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place.
Wedge= a piece of wood, metal, etc. having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
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Answer:
a) Pulley - A pulley is a circle in which a rope is fitted to increase the force applied by us
B) Wedge - A wedge is formed when two inclined Plain joins each other this helps in cutting log, trees etc.