Home
Class 9
PHYSICS
A ball of mass 1kg thrown upwards, reach...

A ball of mass 1kg thrown upwards, reaches a maximum height of 4m. Calculate the work done by the force of gravity during the vertical displacement. `(g = 10m//s^2).`

Text Solution

Verified by Experts

Here, force of gravity on the ball, `F= mg = (1kg) (10m//s^2) =10N`
vertical displacement of the ball, s= 4m
Since the force and the displacement of the ball are in opposite direction, work done by the force of
gravity, i.e., `W = - Fxxs =- (10N)(4m) = -40J`
Obviously, work done against the force of gravity = 40 J
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    PRADEEP|Exercise NCERT Questions|33 Videos

  • WORK AND ENERGY

    PRADEEP|Exercise Short Answer Questions|11 Videos

  • SOUND

    PRADEEP|Exercise Model Test (sec - B)|12 Videos

Similar Questions

Explore conceptually related problems

A ball of mass 1 kg is thrown up. It reaches a maximum height of 5m. What is the work done by the force of gravity during motion [g = 9.8 m//s^(2)]

A crane pulls up a car of mass 500kg to a vertical height of 4m. Calculate the work done by the crane.

A particle of mass 100 g is thrown vertically upwards with a speed of 5 m//s . The work done by the force of gravity during the time the particle goes up is

A particle of mass 20 g is thrown vertically upwards with a speed of 10 m/s. Find the work done by the force of gravity during the time the particle goes up.

A particle of mass 100 g is thrown verically upward with a speed of 5 m//s . The work done by the of gravity during the time the particle goes up is

Calculate the work done in lifting 200 kg of water through a vertical height of 6 meters (Assume g = 10 m//s^(2) ).