हिंदी

Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula.

Advertisements
Advertisements

प्रश्न

Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula.

समीकरण/सूत्र
Advertisements

उत्तर

W = FS cos θ
Where,
(F) - Force
(W) - Work
(S) - Displacement
θ - Angle between F and S
When F and S are parallel, θ = 0.
Then, work done is, W = FS

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Work, Power and Energy - Intex Question [पृष्ठ २७]

APPEARS IN

लखमीर सिंग Physics [English] Class 10 ICSE
अध्याय 2 Work, Power and Energy
Intex Question | Q 1. 3. | पृष्ठ २७
लखमीर सिंग Physics Part 1 [English] Class 9
अध्याय 4 Work and energy
Very Short Answers 1 | Q 52.1.2 | पृष्ठ १४७

संबंधित प्रश्न

Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher.


A coolie does no work against the force of gravity while carrying a luggage on a road.


State two conditions when no work is done by a force.


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


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.

How much work is done when a body of mass m is raised to a height h above the ground?


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.


The work done on an object does not depend on the :


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


P, Q and R are three forces which act as shown in fig.

The point O lies in the same plane. Given, P = Q = R = 10N

(i) Which force has the least moment about O? Give a reason.

(ii)Which force has the greatest moment about O? Give a reason.


Explain the difference between a uniform linear motion and a uniform circular motion.


What is the SI unit of work?


Define kinetic energy.

A body of mass 2 kg is moving with a speed of 20 ms-1. What is its K.E.?

Write the S.I. units of power.

A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.


Give an example 
 Electrical energy changes of sound energy.


Define Translational motion.


________ is said to be done when a force is acting on it.


A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×