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NDA 2 2024 GAT, question 66

Topic: Physics

Q66

Which of the following statements give characteristics of contact forces ?

  1. It appears between an object when it is in contact with some other object

  2. It satisfies the third law of motion

  3. It may appear between a pair of solid and fluid

Select the answer using the code given below :

  1. (a) 1 and 3 only
  2. (b) 2 and 3 only
  3. (c) 1 and 2 only
  4. (d) 1, 2 and 3Correct answer

Solution.

Answer: (d) 1, 2 and 3

  1. Newton's third law applies to interactions involving solids, liquids and gases.
  2. The forces are equal and opposite and act on different bodies; they do not cancel when considering the motion of just one body.