Home
Class 9
PHYSICS
A block of 2 kg is lifted up through 2m ...

A block of 2 kg is lifted up through 2m from the ground. Calculate the potential energy of the block at that point.

Text Solution

Verified by Experts

Mass of the block, m = 2kg
Height raised, h = 2 m
Acceleration due to gravity, `g = 9.8m//s^(2)`
Potential energy of the block,
P.E. = mg h
` = (2)(9.8)(2)`
` = 39.2` J
Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    NCERT BANGLISH|Exercise Let us Improve our learning (Reflections on concepts)|2 Videos

  • WORK AND ENERGY

    NCERT BANGLISH|Exercise Let us Improve our learning (Application of concepts)|5 Videos

  • WHAT IS INSIDE THE ATOM ?

    NCERT BANGLISH|Exercise THINK AND DISCUSS|1 Videos

Similar Questions

Explore conceptually related problems

A block of mass 2kg is placed on the floor. The coefficient of static friction is 0.4. A force F of 2.5N is applied on the block . Calculate the force of friction between the block and the floor.

An electron is moving in 3rd orbit of Li^(+2) calculate potential energy

A block of mass 2 Kg is placed on a horizontal road . Coefficient of friction bwetween the block and the road is 0.2 if 6 N force acts on the block horizontally find the distance travelled by the in first second . [ " Take " = g10 m* s^(-2) ]

A body of mass 10 kg is pushed up 50 cm from the ground , along a plane inclined at 45^@ to the horizontal. If coefficient of friction is 0.2 , then calculate the work done.

A person trying to lose weight by burning fat lifts a mass of 10 kg up to a height of 1m 1000 times. Assume that the potential energy lost each time he lowers the mass is dissipated. How much fat will he use up considering the work done only when the weight is lifted up ? Fat supplies 3.8xx10^7J of energy with a 20% effciency rate.Take g=9.8m//s^2

A lift of mass 400 kg is hung by a wire. Calculate the tension in the wire when the lift is (a) at rest, (b) moving upward with a constant acceleration of 2.0 m//s^(2) and (c) moving downward with an acceleration 2.0 m//s^(2) .