Question

Q.4B)Answer the following questions
1) Which machines run on muscular force?
2)What are the non conventional energy resources?
3)What is meant by complex machines ?
4)What is meant by vibrations?
5)What is shadow?
6)Write the properties of magne.
7)What is special characteristics of the planet Mars?​

Answer 1

1)Machines which run on muscular force are:

• Bicycle.
• Rickshaw.
• Hand pump.
• Stitching machine.
• Hand cart

2)Wind, solar energy and Biomass

3)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.

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