English

What Do You Mean by the Term 'Work'? - Physics

Advertisements
Advertisements

Question

What do you mean by the term 'work'?
Short Note

Solution

'Work' is said to be done when the applied force makes the body move i.e., there is a displacement of body.
It is equal to the product of force and the displacement of the point of application of the force in the direction of force.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Force, Work, Energy and Power - Exercise 1.4 ii [Page 38]

APPEARS IN

Frank Physics - Part 2 [English] Class 10 ICSE
Chapter 1 Force, Work, Energy and Power
Exercise 1.4 ii | Q 9 | Page 38

RELATED QUESTIONS

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.


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?


The energy of a body is its capacity to do .........


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


A body, when acted upon by a force of 10 kgf, moves to a distance 0.5 m in the direction of force. Find the work done by the force. Take 1 kgf = 10 N.


A weight lifter lifted a load of 200 kgf to a height of 2.5 m in 5 s. Calculate:

  1. the work done, and
  2. the power developed by him. 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?


A car is being driven by a force of 2.5 ✕ 1010 N. Travelling at a constant speed of 5 m/s, it takes 2 minutes to reach a certain place. Calculate the work done.


How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?


Name the physical quantity whose SI unit is Nm.


Why is the work done on an object moving along a circular path zero?

Can work done be zero even if force acts on the body?


Define kinetic energy.

A body is thrown vertically upwards. Its velocity keeps on changing. What happens to its K.E. when does its velocity become zero?

Name the physical quantity associated with the 'rate of doing work'.


In the following case write yes, if the work is being done and no if no work is being done.

A coolie standing with a heavy load on his head


Can two agents, doing the same work, have different power?


What are the advantages and disadvantages of using solar cells for producing electricity?


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

A green plant is carrying out photosynthesis.


A man squatting on the ground gets straight up and stand. The force of reaction of ground on the man during the process is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×