Home
Class 11
PHYSICS
Three charges +q,-q, and +2q are placed ...

Three charges `+q,-q, and +2q` are placed at the verticles of a right angled triangle (isoceles triangle) as shown. The net electrostatic energy of the configuration is :

A

`1/3(ahat(i)-bhat(j))`

B

`2/3(ahat(i)-bhat(j))`

C

`2/3(ahat(i)+bhat(j))`

D

`1/3(ahat(i)+bhat(j))`

Text Solution

Verified by Experts

The correct Answer is:
D
Given, mass = m
and here `r_(CM) = (mahat(i) + mbhat(j) + m0)/(3m)`
`rArr r_(CM) = 1/3(ahat(i) + bhat(j))`
Promotional Banner

Topper's Solved these Questions

  • CENTRE OF MASS

    DC PANDEY ENGLISH|Exercise Match the coloumns|9 Videos

  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY ENGLISH|Exercise Medical entrance s gallery|38 Videos

  • CENTRE OF MASS, IMPULSE AND MOMENTUM

    DC PANDEY ENGLISH|Exercise Comprehension type questions|15 Videos

Similar Questions

Explore conceptually related problems

Three charge +q, -q , and +2q are placed at the vertices of a right angled triangle (isosceles triangle)as shown. The net electrostatic energy of the configuration is:

Three charges Q, +q and +q are placed at the vertices of a right-angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if Q is equal to

Three charges Q, +q and +q are placed at the vertices of a right-angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if Q is equal to

Three charges Q+q and + q are placed at the vertices of a right -angle isosceles triangle as shown below. The net eletrostatic energy of the configuration is zero if the value of Q is :

Three charges +q , +q, and Q are placed at the comers of a right angled isosceles triangle as shown in the figure. If the net potential energy of the system is zero then value of Q is

Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal to

Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal to

Three charges Q_(0) , - q and -q are placed at the vertices of an isosceles right angle triangle as in the figure. The net electrostatic potential energy is zero if Q 0 is equal to :

Three charges 2q, -q, and -q are located at the vertices of an equilateral triangle. At the center of the triangle,

Three charges +q, +q and -2q are placed at the vertices of an equilareral triagle. What is the dipole moment of the system?

DC PANDEY ENGLISH-CENTRE OF MASS-Medical entrances gallery
  1. A ball of mass M falls from a height h on a floor which the coefficien...

    Text Solution

    |

  2. Three particles of masses 0.50 kg, 1.0 kg and are placed at the corner...

    Text Solution

    |

  3. A large number of particles are placed around the origin, each at a di...

    Text Solution

    |

  4. A circular disc of radius R rolls without slipping along the horizonta...

    Text Solution

    |

  5. The linear momentum of a particle varies with time t as p= a +bt + ct^...

    Text Solution

    |

  6. A body of mass (4m) is laying in xy-plane at rest. It suddenly explode...

    Text Solution

    |

  7. The position of center of mass of a system of particles does not depen...

    Text Solution

    |

  8. A bullet is fired from the gun. The gun recoils, the kinetic energy of...

    Text Solution

    |

  9. An explosion blows a rock into three parts. Two parts go off at right ...

    Text Solution

    |

  10. The linear momentum is conserved in

    Text Solution

    |

  11. Three charges +q,-q, and +2q are placed at the verticles of a right an...

    Text Solution

    |

  12. A ball of mass 'm' moving with a horizontal velocity 'v' strikes the b...

    Text Solution

    |

  13. In an inelastic collision

    Text Solution

    |

  14. A body of mass m(1) moving with uniform velocity of 40 m/s collides w...

    Text Solution

    |

  15. Two spheres A and B of masses m(1) and m(2) respectively collide. A is...

    Text Solution

    |

  16. Two perons of masses 55 kg and 65 kg respectively, are at the opposite...

    Text Solution

    |

  17. A ball moving with a speed of 9 m s^(-1) strikes an identical stationa...

    Text Solution

    |

  18. A body of mass 0.25 kg is projected with muzzle velocity 100ms^(-1) fr...

    Text Solution

    |

  19. A particle of mass m(1) = 4 kg moving at 6hatims^(-1) collides perfect...

    Text Solution

    |

  20. A mass of 10 g moving horizontally with a velocity of 100 cm^(-1) stri...

    Text Solution

    |