Home
Class 11
PHYSICS
A perosn is holding a bucket by applying...

A perosn is holding a bucket by applying a force of 20N. He moves a horizontal distance of 15m first and then climbs up a distance of 12m. What is the total work done by him?

Text Solution

Verified by Experts

Here, `F=20N, s_(1)=15m, theta_(1)=90^(@)`
`s_(2)=12m, theta_(2)=0^(@), W=?`
`W=W_(1)+W_(2)=Fs_(1)costheta_(1)+Fs_(2)costheta_(2)`
`=20xx15cos90^(@)+20xx12cos0^(@)`
`W=0+240=240J`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    PRADEEP|Exercise Conceptual Problems|27 Videos
  • WORK, ENERGY AND POWER

    PRADEEP|Exercise Very Short Anwer Question.|54 Videos
  • WORK, ENERGY AND POWER

    PRADEEP|Exercise Curiosity questions|2 Videos
  • THERMODYNAMICS

    PRADEEP|Exercise Assertion- Reason Type Questions|19 Videos

Similar Questions

Explore conceptually related problems

A person is holding a bucket by applying a force of 10 N. He moves a horizontal distance of 5 m and then climbs up a vertical distance of 10 m. Find the total work done him.

A man carries a suitcase on head by applying a force of 20 N . He travels a horizontal a distance of 10 m and then climbs a vertical distance of 5 m . Calculate the total work done by him .

Knowledge Check

  • A man of mass 65 kg is holding a bucket of mass 15 kg. He walks 50 m on a level road at a constant speed of 3 m/s and then climbs up a hill of height 20 m. What is the work done by the man? Take g = 10 m/s^2 .

    A
    2.05kJ
    B
    3.5kJ
    C
    12kJ
    D
    16kJ
  • A person holds a bucket of weight 60N . He walks 7m along the horizontal path and then climbs up a vertical distance of 5m. The work done by the man is

    A
    300 J
    B
    420 J
    C
    720 J
    D
    None of these
  • A person holds a bucket of weight 60 N. He walks 7 m along the horizontal path and then climbs up a vertical distance of 5 m. The work done by the man is

    A
    `300 N-m`
    B
    `420 N-m`
    C
    `720 N-m`
    D
    `210 N-m`
  • Similar Questions

    Explore conceptually related problems

    A man of weight 60 kg f is carrying a load of 20 kg of on his head . He moves a distance of 25 m up an incline of 1 in 12 . Calculate the work done by him .

    How much work is done when a force of 1 N moves a body through a distance of 1 m in its own direction ?

    A gardener pushes a lawn roller on a rough surface. He applies a force of 150 N over a distance of 5 m. After he gets tired and his applied force reduces linerly with distance to 75 N. The total distance moved is 10 m. Plot the force applied by the gardencer and the frictional force, which is 75 N versus displacement. Calculate the work done by t he two forces over 10 m.

    A person holds a bucket of weight 80 N. He walks 8 m along the horizontal and then climbs up a vertical distance of 5 m. The work done by the person is

    How much work is done by a force of 10 N in moving an object through a distance of 1 m in the direction of the force ?