Q74 / 90 · JEE Main 2023 (12 Apr Shift 1) · Physics

Three forces F1=10 N, F2=8 N, F3=6 N are acting on a particle of mass 5 kg. The forces F2 and F3 are applied perpendicularly so that particle remains at rest. If the force F1 is removed, then the acceleration of the particle is

  • A
    7 m s–2
  • B
    0.5 m s–2
  • C
    4.8 m s–2
  • Correct answer
    D
    2 m s–2

Solution

When the force F1 is removed, the particle starts accelerating because of the resultant force between F2 and F3.

The resultant force can be calculated as follows:

F=F22+F32=10 N

Hence, the acceleration of the particle is given by

a=10 N5 kg=2 m s–2

Hence, the correct answer is option: 'D'.

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