English

What are the two kinds of mechanical energy?

Advertisements
Advertisements

Questions

What are the two kinds of mechanical energy?

What are the two forms of mechanical energy?

One Line Answer
Advertisements

Solution

Two kinds/forms of mechanical energy:

  1. The Potential Energy (P.E.)
  2. The Kinetic Energy (K.E.)
shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Energy - Short/Long Answer questions [Page 77]

APPEARS IN

S.S. Shome Concise Physics [English] Class 8 ICSE
Chapter 4 Energy
Short/Long Answer questions | Q 14 | Page 77
S.S. Shome Concise Physics [English] Class 7 ICSE
Chapter 3 Energy
Short/Long Answer Questions | Q 4
Selina Concise Physics [English] Class 10 ICSE
Chapter 2 Work, Energy and Power
EXERCISE - 2(B) | Q 1. | Page 40

RELATED QUESTIONS

A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?


Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?


A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?


State the S.I. unit of work and define it.


A water pump raises 50 litres of water through a height of 25 m in 5 s. Calculate the power of the pump required.

(Take g = 10 N kg-1 and density of water = 1000 kg m-3)


A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:

The loss in potential energy of the body, 


Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.


State two disadvantages of producing hydroelectricity.


What do you mean by degradation of energy?


What happens to the work done when the dispacement of body is at right angles to the direction of force acting on it? Explain your answer.


Why is the work done on an object moving with uniform circular motion zero?


Name the physical quantity whose SI unit is Nm.


Name the type of energy possessed by a
(i) stretched catapult        (ii) hot iron
(iii) wound up clock


What is meant by the principle of moments?

A bullet is of mass 'm' g and is moving with a velocity 'v' m/s. Find the kinetic energy of the bullet when
(a) The mass is doubled,
(b) The velocity is tripled.


State the energy changes which take place when Water stored in the dam is used to turn turbine in dynamo.


Give an example 
 Electrical energy changes of sound energy.


(i) A 200g ball is thrown vertically upward with an initial velocity of 30 ms-1. Draw a velocity-time graph for the motion of ball.
(ii) How long will the ball take to reach the highest point?
(iii) What will be the kinetic energy of ball, when it returns to the starting point, neglecting the air resistance?
(iv) What will be the potential energy of ball at highest point?


How long should an electric motor, of power 2 H.P. operate, so as to pump 5 m3 of water from a depth of 15m. [Take g = 10 N kg−1]


State whether work is done or not, by writing yes or no, in the following case:

A boy climbs up 20 stairs.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×