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प्रश्न
What kind of energy is possessed by the following?
A stone kept on roof-top _______________
उत्तर
A stone kept on a roof possesses gravitational potential energy because of its height from the ground.
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संबंधित प्रश्न
State the condition under which the mechanical energy is conserved.
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
State whether the object possess kinetic energy, potential energy, or both :
A man climbing a hill _____________.
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
What kind of energy is possessed by the following?
A stretched rubber band _____________
A boy weighing 40 kg makes a high jump of 1.5 m.
What is his potential energy at the highest point? (g = 10 m/s2)
Name the device or machine which convert :
Chemical energy into kinetic energy (or mechanical energy).
Fill in the blank with suitable word:
The electricity meter installed in our homes measure electrical energy in the units of ___________.
What is the meaning of the symbol kWh? What quantity does it represent?
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
