How are simple machines different from complex machines? What are the three categories into which levers are divided?
Answers
Answer:
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Simple Machines:
These machines are used to change the direction or magnitude of force. They have no or very few parts that move.
Examples:
i) Inclined plane: It is high at one and at low at the other end. Helps in Easy transportation of substances due to the presence of gravity.
ii) Wedge: It is thigh at one end and thin at the other end. It is used to seperate or hold to substances in place.
iii) Screw: It is an inclined plane wrapped around a cylinder. It helps to hold substances in one place.
iv) Lever: It is a bar that moves around with a fixed point. It helps in pushing up of any object when required pressure is applied
v) Wheel and axle: A wheel attached to a best so that they both move together. It is used to tender force from one object to other.
vi) Pulley: A chain or type wrapped around a wheel. It helps to lift or drop down objects.
Complex machines:
These machines are the mix of two or more simple machines. They are used in a wide manner even in daily life.
Examples:
i) Fishing rod: It has a Pulley, lever and Wheel and axle.
ii) Bulldozer: It has wedges, lever and Wheel And axle.
iii) Clippers: It has a wedge and levers.
iv) Escalator: It has an inclined plane and pulleys.
Explanation:
Answer:
A simple machine is any of various device that function in a manner basic to any machine such as a lever,pulley,wedge,screw or incline plane.
A complex machine is a device consisting of two or more simple machines working together.
first category is finishing road.
second category is bulldozer.
third category is clipper.
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