Advertisements
Advertisements
प्रश्न
State two factors on which the potential energy of a body at a certain height above the ground depends.
Advertisements
उत्तर
- Height of the object from above the ground
- Mass of the object
- Gravitational acceleration due to the planet's gravitational force.
Therefore, P. E. = m (mass) × g (gravitational acceleration) × h (height)
APPEARS IN
संबंधित प्रश्न
The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?
Write the expression for the gravitational potential energy explaining the meaning of the symbols used.
A body of mass m is moved from ground to a height h. If the force of gravity on mass of 1 kg is g newton, find the force needed to lift the body.
Define the term potential energy of a body.
A spring is kept compressed by a small trolley of mass 0.5 kg lying on a smooth horizontal surface as shown in the adjacent fig. When the trolley is released, it is found to move at a speed v = 2 m s-1. What potential energy did the spring possess when compressed?
A body falls freely under gravity from rest. Name the kind of energy it will possess at the point from where it falls.
A weightlifter is lifting weights of mass 200 kg up to a height of 2 metres. If g = 9.8 m s−2, calculate :
work done by the weightlifter
To what height should a box of mass 150 kg be lifted, so that its potential energy may become 7350 joules? (g = 9.8 m/s2)
Which of the following is the example potential energy?
A body is falling from a height of h. After it has fallen a height `"h"/2`, it will possess
