What is an effort arm!
g answer - Type Questions.
What is a complex machine? Give four example
What is an inclined plane? How is it useful?
1) What is a pulley? How are pulleys used to do so
v) Define the following terms of a lever:
(a) load
(b) effort
(c) fulcr
v) What is a gear? How does it work?
vi) Why is it easy to pull downward?
Answers
Answer:
Explanation:
Complex machines can be created by combining simple machines. They can be as small as a mechanical watch or as large as a construction crane.
Complex machines are also called compound machines. Two or more simple machines work together to form a complex machine. Compound machines can do more difficult jobs than simple machines alone.
Examples of complex machines are bicycle, wheel barrow, crane, car jack, lawn mover etc.
An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load. ... Moving an object up an inclined plane requires less force than lifting it straight up, at a cost of an increase in the distance moved.
The pulley is really a wheel and axle with a rope or chain attached. A pulley makes work seem easier because it changes the direction of motion to work with gravity. ... It would be the exact amount of work in either case, but the action of pulling down feels easier because you're working with the force of gravity.
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