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' is given by `vecF=-hati+2hatj+3hatkN`. What is the work done by this force in moving the body through a distance of 4 m along the z-axis?

Text Solution

Verified by Experts

`vecF=(-hati+2hatj+3hatk)" "|vecF_(z)|=F_(z)=3N`
hence work done = `W=Fs=3xx4=12J`
Promotional Banner

Topper's Solved these Questions

  • WORK, POWER AND ENERGY

    SUBHASH PUBLICATION|Exercise FIVE MARKS QUESTIONS AND ANSWERS|6 Videos

  • WAVES

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|46 Videos

Similar Questions

Explore conceptually related problems

Calculate the workdone by a body. By the force of 5 N makes to move through a distance of 12 m.

A body is subjected to a constant force vecF in newton given by : vecF=2hati+9hatj+12hatk , where hati,hatj and hatk are unit vectors along x,y and z-axis respectively. What is the work done by this force in moving the body through a distance of 2 m along 2-axis ?

A body of mass m at rest is subjected to a constant force F for time. The kinetic energy at timet is given by :

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

The work done by the force F=2i-3j+2k in moving a particle from (3,4,5) to (1,2,3) is

A body is travelling in a straight line path with a velocity given by v = ax where 'a' is a constant such that a = 5 units. What will be the work done by the force acting during its displacement from x = 0 to x = 2m ?

A body of mass 2 kg initially at rest moves under the action of an applied horizontal force of 7N on a table with coefficient of kinetic friction = 0.1 . Compute the Work done by the net force on the body in 10s.

SUBHASH PUBLICATION-WORK, POWER AND ENERGY -NUMERICALS WITH SOLUTIONS
  1. An electron and a proton are detected in a cosmic ray experiment, the ...

    Text Solution

    |

  2. A rain drop of radius 2 mm falls from a height of 500 m above the grou...

    Text Solution

    |

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

    Text Solution

    |

  4. A molecule in a gas container hits a horizontal wall with a speed of 2...

    Text Solution

    |

  5. A force of vecF=(hati+2hatj+3hatk)N when acting on a particle propels ...

    Text Solution

    |

  6. A pump is required to lift 800 kg of water per minute from a 10 m deep...

    Text Solution

    |

  7. The potential energy of a particle in the X-Y plane is given by U=k(x+...

    Text Solution

    |

  8. A fire engine can throw 400 gallons of water per minute to a height of...

    Text Solution

    |

  9. A car weighing 550 kg, ascends a hill with a gradient of 1 in 6 at a s...

    Text Solution

    |

  10. A turbine generates 1.64 MW. Assuming the efficiency to be 80% and hea...

    Text Solution

    |

  11. A steam turbine shovel lifts 10^(3) kg of earth to a height of 3.75 m ...

    Text Solution

    |

  12. The makers of a certain motor car state that if the brakes are applied...

    Text Solution

    |

  13. A machine gun fires 25 bullets of mass 0.1 kg each, per minute. If the...

    Text Solution

    |

  14. A cloud of thickness 10 m and area 10^(6)m^(2) is formed at a height o...

    Text Solution

    |

  15. A body of mass 10 kg at a height 200 m falls freely. Calculate the kin...

    Text Solution

    |

  16. A cart is used to lower vertically, a block of mass 10 kg over a dista...

    Text Solution

    |

  17. A body of mass 5 kg, initially at rest, moves under the action of an a...

    Text Solution

    |

  18. The blades of a windmill sweep out a circle of area 30m^(2). If the wi...

    Text Solution

    |

  19. A block of wood of mass 0.5 kg is suspended by means of a thin wire. A...

    Text Solution

    |

  20. In the figure show below, calculate the coefficient of friction betwee...

    Text Solution

    |