Home
Class 12
PHYSICS
Three forces are acting on a particle of...

Three forces are acting on a particle of mass m intially in equilibrium. If the first two forces `(R_(1) and R_(2))` are perpendicular to each other and suddenly the third force `(R_(3))` is removed, then the acceleration on the particle is

A

`vec(F)_(1)//m`

B

`vec(F)_(1)//m`

C

`vec(F)_(2)-vec(F)_(3)//m`

D

`vec(F)_(2)//m`

Text Solution

Verified by Experts

The correct Answer is:
B
As initially `vec(F)_(1)+vec(F)_(2)+vec(F)_(3)=0`
If `vec(F)_(1)` is deleted
then `vecF_("net") = vec(F)_(2) +vec(F)_(3)=ma vec(a)=(vec(F)_(2)+vec(F)_(3))/(m)=(vec(F_(1)))/(m)`
Promotional Banner

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP No.24|9 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP No.25|20 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP No.22|9 Videos

  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise High Level Problems (HIP)|19 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE ENGLISH|Exercise Exercise 3|27 Videos

Similar Questions

Explore conceptually related problems

Four forces acting on a particle keep it in equilibrium, then :-

When forces F_(1) , F_(2) , F_(3) are acting on a particle of mass m such that F_(2) and F_(3) are mutually prependicular, then the particle remains stationary. If the force F_(1) is now rejmoved then the acceleration of the particle is

When forces F_1 , F_2 , F_3 , are acting on a particle of mass m such that F_2 and F_3 are mutually perpendicular, then the particle remains stationary. If the force F_1 is now removed then the acceleration of the particle is

When a force F acts on a particle of mass m, the acceleration of particle becomes a. now if two forces of magnitude 3F and 4F acts on the particle simultaneously as shown in figure, then the acceleration of the particle is

If a constant force acts on a particle, its acceleration will

If two forces each of magnitude 20N, are acting on a particle such that the first force (vecE_(1)) is acting along east direction and the second force (vercF_(2)) is acting along the direction 60^(@) north of west, then the magnitude of resultant force on particle is

Assertion (A): Centripetal force does no work . Reason (R) : Force and displacement are perpendicular to each other

Two particles of equal masses are revolving in circular paths of radii r_(1) and r_(2) respectively with the same speed. The ratio of their centripetal force is

If the sum of all the forces acting on a body is zero, is it necessarily in equilibrium ? If the sum of all the forces on a particle is zero, is it necessarily in equilibrium?

If a particle of mass m is moving in a horizontal circle of radius r with a centripetal force (-1//r^(2)) , the total energy is

RESONANCE ENGLISH-DAILY PRACTICE PROBLEM-DPP No.23
  1. A block B is pushed momentarily along a horizontal surface with an ini...

    Text Solution

    |

  2. A 60kg is pushed horizontaly with just enough force to start it moving...

    Text Solution

    |

  3. If the eye is kept very close to a coverging lens (focal length = 10 c...

    Text Solution

    |

  4. If the eye is kept very close to a coverging lens (focal length = 10 c...

    Text Solution

    |

  5. With what angular velocity the earth should spin in order that a body ...

    Text Solution

    |

  6. Position vector of a particle moving in space is given by : vec(r)=3...

    Text Solution

    |

  7. A particle P is projected with speed 20 m//s at angle 37^(@) from hori...

    Text Solution

    |

  8. Mirror in the arrangement shown in figure is moving up with speed 8 cm...

    Text Solution

    |

  9. A force vec(F) is applied to block (m = 6 kg) at rest on an inclined p...

    Text Solution

    |

  10. A block of mass 20 kg is acted upon by a force F=30N at an angle 53^@ ...

    Text Solution

    |

  11. A particle is projected vertically upwards with a speed of 16ms^-1. Af...

    Text Solution

    |

  12. Three forces are acting on a particle of mass m intially in equilibriu...

    Text Solution

    |

  13. A uniform chain of length 2m is kept on a table such that a length of...

    Text Solution

    |

  14. Two carts of masses 200 kg and 300 kg on horizontal rails are pushed a...

    Text Solution

    |

  15. X-ray beam can be deflected by

    Text Solution

    |

  16. Two bodies P and Q of equal masses are suspended from two separate mas...

    Text Solution

    |

  17. the photon radiated from hydrogen corresponding to the second line of ...

    Text Solution

    |

  18. Which electronic transition in Li^(2+) ion would emit radiation of sam...

    Text Solution

    |

  19. A small particle of mass m, moves in such a way that the potential ene...

    Text Solution

    |

  20. A block of mass m(1) lies on the top of fixed wedge as shown in fig. a...

    Text Solution

    |