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Force and Pressure — Science STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8ScienceForce and Pressure5 Marks
Question
What is a non contact force? Give one example.
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Answer

A force that acts between two objects even if the two objects are not in contact, is called a non contact force.
Example: The earth revolves around the Sun.

Make a list of some more examples in which contact and non contact forces are applied. Write the types of force.

1. Some examples in which contact forces are applied:

  • to cut an apple with a knife (muscular force, frictional force)
  • to lift a ball lying on the ground (muscular force, frictional force)

2. Some examples in which non contact forces are applied:

  • the motion of the earth around the Sun (gravitational force)
  • the motion of an electron around the nucleus of an atom (mainly the electric force).

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