Advertisements
Advertisements
प्रश्न
The potential energy of your body is least when you are ______.
पर्याय
sitting on a chair
Sitting on the ground
sleeping on the ground
standing on the ground
उत्तर
The potential energy of your body is least when you are sleeping on the ground.
Explanation:
Based on its position, any object can store energy. Potential energy is the stored energy in that position. For example, a drawn bow stores energy due to its position. When the bow is in its usual posture, that is, when it is not drawn, no energy is stored in it. However, if its position is altered from its typical equilibrium state, it can store energy as a result of its position.
When it comes to gravitational potential energy. A relationship between an object's height and gravitational potential energy is observed. The gravitational potential energy of an object increases with its elevation.
A person seated in a chair is the most elevated of the possibilities shown. As a result, it possesses the most potential energy. When sleeping or lying down on the ground, a person's height from the ground is at its lowest. As a result, when a person sleeps on the ground, his or her potential energy is limited.
APPEARS IN
संबंधित प्रश्न
A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal, what is the work done on the object by the gravitational force? Explain your answer.
Gravitational potential energy U = mass × force of gravity on unit mass × ..........
Two bodies A and B of masses 10 kg and 20 kg respectively are at the same height above the ground. Which of the two has greater potential energy?
A bucket full of water is on the first floor of your house and another identical bucket with the same quantity of water is kept on the second floor. Which of the two has greater potential energy?
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.
The potential energy of a body is the energy by virtue of its ______.
A ball of mass m is thrown vertically up with an initial velocity so as to reach a height h. The correct statement is:
State whether the following statement is true or false :
The potential energy of a body of mass 1 kg kept at a height of 1 m is 1 J.
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)
Give one example each of a body possessing : (i) kinetic energy, and (ii) potential energy.
Explain by an example what is meant by potential energy. Write down the expression for gravitational potential energy of a body of mass m placed at a height h above the surface of the earth.
What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.
If 784 J of work was done in lifting a 20 kg mass, calculate the height through which it was lifted. (g = 9.8 m/s2)
A man is instructed to carry a package from the base camp at B to summit A of a hill at a height of 1200 metres. The man weighs 800 N and the package weighs 200 N. If g = 10 m/s2,
- how much work does man do against gravity?
- what is the potential energy of the package at A if its is assumed to be zero at B?
A car is accelerated on a levelled road and acquires a velocity 4 times of its initial velocity. During this process, the potential energy of the car :
If we increase the velocity of a car moving on a flat surface to four times its original speed, its potential energy ______.
How much energy is gained by a box of mass 20 kg when a man, raises the box by 0.5 m in order to place it inside the bus? (g=10 m/s-2)
A body is falling from a height of h. After it has fallen a height `"h"/2`, it will possess