Home
Class 11
PHYSICS
A body constrained to move along the z-a...

A body constrained to move along the z-axis of a coordinate system is subject to a constant force F given by `F=-hati+2hatj+3hatkN` where `hati, hatj, hatk` are unit vectors along the x-, y- and z-axis of the system respectively. What is the work done by this force in moving the body a distance of 4 m along the z-axis ?

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

vecA = -2hati + 3hatj - 4hatk and vecB = 3hati - 4hatj + 5hatk where, hati, hatj and hatk are unti vectors along x,y and axes respectively. Find vecA + vecB , vecA - vecB, vecA.vecB and vecA xx vecB .

If veca=3hati-hatj+2hatk and vecb=-hati-2hatj+4hatk , find a unit vector along the vector (veca+vecb) .

If veca=xhati+2hatj-zhatk and vecb=3hati-yhatj+hatk are equal vectors. Write the value of x+y+z .

If the position vectors of A and B are hati+3hatj-7hatk and 5hati-2hatj+4hatk , then the direction cosine of AB along Y-axis is

A particle moves alog the x - axis from x=0 to x=5 m under the influence off a force given by F=7-2x+3x^2 .Calculate the work done in doing so.

If the position vectors of P and Q are hati+2hatj-7hatk and 5hati-2hatj+4hatk respectively, the cosine of the angle between PQ and Z-axis is

An electron is moving along X-axis in a magnetic field acting along Y-axis. What is the direction of magnetic force acting on it?

MBD-WORK, ENERGY AND POWER-EXAMPLE
  1. A body is moving unidirectionally under the influence of a source of c...

    Text Solution

    |

  2. A body is moving unidirectionally under the influence of a source of c...

    Text Solution

    |

  3. A body constrained to move along the z-axis of a coordinate system is ...

    Text Solution

    |

  4. An electron and a proton are detected in a cosmic ray experiment, the ...

    Text Solution

    |

  5. A rain drop of radius 2 mm falls from a height of 500 nr above the gro...

    Text Solution

    |

  6. A molecule in a gas container hits a horizontal wall with speed 200 m ...

    Text Solution

    |

  7. A pump on the ground floor of a building can pump up water to fill a t...

    Text Solution

    |

  8. Two identical ball bearings in contact with each other and resting on ...

    Text Solution

    |

  9. The bob A of a pendulum released from 30^@ to the vertical hits anothe...

    Text Solution

    |

  10. The bob of a pendulum is released from a horizontal position. If the l...

    Text Solution

    |

  11. A trolley of mass 300 kg carrying a sandbag of 25 kg is moving uniform...

    Text Solution

    |

  12. A body of mass 0.5 kg travels in a straight line with velocity v=a x(3...

    Text Solution

    |

  13. The blades of a windmill sweep out a circle of area:- If the wind flow...

    Text Solution

    |

  14. The blades of a windmill sweep out a circle of area :-What is the kine...

    Text Solution

    |

  15. The blades of a windmill sweep out a circle of area :- Assume that the...

    Text Solution

    |

  16. A person trying to lose weight (dieter) lifts a 10 kg mass, one thousa...

    Text Solution

    |

  17. A person trying to lose weight (dieter) lifts a 10 kg mass, one thousa...

    Text Solution

    |

  18. A family uses 8 kW of power:- Direct solar energy is incident on the h...

    Text Solution

    |

  19. A family uses 8 kW of power:- Direct solar energy is incident on the h...

    Text Solution

    |

  20. A bullet of mass 0.012 kg and horizontal speed 70 m s^-1 strikes a blo...

    Text Solution

    |