मराठी

What are the two kinds of mechanical energy? - Physics

Advertisements
Advertisements

प्रश्न

What are the two kinds of mechanical energy?

What are the two forms of mechanical energy?

एका वाक्यात उत्तर
Advertisements

उत्तर

Two kinds/forms of mechanical energy:

  1. The Potential Energy (P.E.)
  2. The Kinetic Energy (K.E.)
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Energy - Short/Long Answer questions [पृष्ठ ७७]

APPEARS IN

सेलिना Concise Physics [English] Class 8 ICSE
पाठ 4 Energy
Short/Long Answer questions | Q 14 | पृष्ठ ७७
सेलिना Concise Physics [English] Class 7 ICSE
पाठ 3 Energy
Short/Long Answer Questions | Q 4
सेलिना Physics [English] Class 10 ICSE
पाठ 2 Work, Energy and Power
EXERCISE - 2(B) | Q 1. | पृष्ठ ४०
आईसीएसई Physics [English] Class 10
पाठ 1 Force, Work, Power and Energy
Short Answers | Q 66.2

संबंधित प्रश्‍न

In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.


An electron emitter must have _____________ work function and ___________ melting point.


The S.I. unit of energy is .............


A coolie is moving on a road with a luggage on his head. Does he perform work against the force of gravity? Give reason for your answer.


A boy of weight 40 kgf climbs up the 15 steps, each 15 cm high in 10 s and a girl of weight 20 kgf does the same in 5 s. Compare:

  1. the work done, and
  2. the power developed by them. Take g = 10 N kg-1.

A vessel containing 50 kg of water is placed at a height 15 m above the ground. Assuming the gravitational potential energy at ground to be zero, what will be the gravitational potential energy of water in the vessel? (g = 10 m s-2)


State the energy transformation on the following:

Electricity is obtained from solar energy.


Fill in the blank with suitable word : 
The work done on a body moving in a circular path is __________


State the conditions of equilibrium for a rigid body.


What is the SI unit of work?


What is the work when a load of 500 kg is lifted vertically by 5 m? Given, g = 10 ms-2. Express your answer in kilo joule.

What do you mean by the term 'work'?

Write an expression for work done by a force depends?


If the speed of a particle is increased four times, how will its kinetic energy be affected?

The K.E. of a body is 5 J. What will be its K.E. when its speed is doubled?

An object is dropped from a height H. when is its
(i)    P.E. maximum,
(ii)    K.E. maximum,
(iii)    P.E. = K.E.?


The truck has to apply a force of 3000 N to overcome friction while moving with a uniform speed of 36 kmhr−1. What is the power developed by the truck?

Fill in the boxe to show the corresponding energy transformation.


One labourer carried four pans of road metal through a distance of 100 metres. If he carries two pans of road metal through a 200 metre distance ______ work will be done.


Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.

A donkey is carrying a load on its back.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×