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The physical quantities which show both magnitude as well as direction is called as vector quantities.
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Yogita Ingle 6 years, 3 months ago

  • Robert Hooke was the scientist who gave Hooke’s law.
  • Hooke’s law states that within the elastic limit, stress developed is directly proportional to the strain produced in a body.
  • Consider a scenario where we apply external force to the body. As a result stress develops in the body due to this stress there will be a strain produced in the body which implies that there will be some deformation in the body.
  • Because of stress, strain is produced.
  • According to Hooke’s law, if strain increases the stress will increase and vice-versa.
  • The Hooke’s law is applicable to all elastic substances.
  • It does not apply to plastic deformation.
  • Mathematically :
  • stress ∝ strain
  • stress = k × strain
  • Where k is the proportionality constant and is known as modulus of elasticity.
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Pankajkumar Shukla 4 years, 1 month ago

The distance of the moon from the earth is 3'8multiply10 ki power 5calculate the speed of the earth removing around the mass of the earth 6'1multiply 10 ki power 25 kg and 6'67multiply 10 ki power -11 N mki power two kg ki power -2
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