Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 8 Answered

Explain about force and pressure.
Asked by Kemkaranita | 15 Jul, 2019, 19:55: PM
answered-by-expert Expert Answer
Force is defined as  any action that tends to maintain or alter the motion of a body or to distort it.
If a body is at rest , by applying force, the body moves with acceleration.
Example :-  Car is acclerated from rest by applying force from engine.
 
If a body is already in motion, its speed can be changed or it can be brought to rest by applying force .
 
Example :- Break is applied to a moving car so that friction force acts against the motion of the car.
                  This action reduces speed of car and car can be brought to rest.
 
If the object can not be moved, it can be distorted ( shape is changed ) by applying force.
Example : Bending of objects.
 
---------------------------------------------------------------
 
Pressure is defined as force acting on unit area.
 
When a container is filled with liquid or gas, each and every point of walls of container experience force
due to liquid and gas molecules impingement on the walls of container.
 
Hence when a container is filled with liquid or gas, it is required to get the pressure i.e., force per unit area for many purpose.
 
For same force, pressure can be increased by reducing area.  Example :- cutting with knife, piercing with needle
Answered by Thiyagarajan K | 16 Jul, 2019, 11:49: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 8 - Physics
density
Asked by rudranilroy170 | 23 Jul, 2024, 08:53: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
how to make a chart of simple pendulem
Asked by vermafact23256 | 14 Jul, 2024, 18:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
The Force of Attraction between two similar types of Molecules is called
Asked by agarwaldishant3 | 07 Jul, 2024, 19:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
vertical height is independent of the shape of the size of a tube it does not change if the tube is tilted what are these ????????
Asked by authpurnationalmodel88 | 06 Jun, 2024, 15:57: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
explain ch 2 of physics
Asked by akashmalik14264 | 06 Jun, 2024, 15:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
what is latent heat
Asked by jayeetakundu80 | 26 May, 2024, 21:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
WHAT IS ATOM  
Asked by farhandoranda | 30 Apr, 2024, 11:45: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
This is a picture of a kWh meter. Why are some of the dials on the counter, clockwise and the other counter clockwise?
question image
Asked by shanvi.m.gupta | 13 Mar, 2024, 00:26: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
describe how you determine the kind of charge acquired by a plastic comb after combing dry hair. do hair too get charged in this process ? if so, state the evidence to verify it.
Asked by porwalvny | 03 Mar, 2024, 09:35: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 8 - Physics
propagation of sound in air
Asked by sumanayak76 | 29 Dec, 2023, 16:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Are You a Teacher or a Parent Seeking Customised Tests? Click here
×