If an object isnt moving, no external force acts on it, Physics

Assignment Help:

Q. If an object isn't moving, no external force acts on it. 

No it is always not true, there would be balanced forces which cancel each other out leaving no net force. Example: Sitting on a chair, the chair pushes up on you while gravity pulls you down, but you aren't going anywhere because those forces cancel each oyher and net force is equal to zero. 


Related Discussions:- If an object isnt moving, no external force acts on it

Explain electromagnetism, Electromagnetism: A temporary magnet formed b...

Electromagnetism: A temporary magnet formed by winding a coil of insulated copper wire around a piece of shift iron is known as electromagnet. When current is passed it behaves

Illustrate properties of electromagnetic waves, Q. Illustrate what two prop...

Q. Illustrate what two properties of electromagnetic waves are used to attach info to radio signals? Answer:- By changing the amplitude of a radio wave you can encode info

Power, if a big person and a small person run up the stairs in the same tim...

if a big person and a small person run up the stairs in the same time, which of them develops the most power

Calculate the x-ray energy flux - tungsten anode target, Consider an x-ray ...

Consider an x-ray tube in which electrons are accelerated by a constant high voltage of 250 kV. If the electron beam current is 10 mA, calculate the x-ray energy flux (energy fluen

Electronics 1, norton theorem and its application and uses in sciences

norton theorem and its application and uses in sciences

Short circiut ., You''ve recently wired up an experiment in the lab. Part o...

You''ve recently wired up an experiment in the lab. Part of the experiment involves having two long wires extended 2 meters below the ground. One day, the experiment stops working.

Volume observed by an observer stationed on the earth, A cube of side ‘a' i...

A cube of side ‘a' is moving with speed 0.6 c normal to one of its face. What is its volume observed by an observer stationed on the earth ? The volume of cube = a x a x a = a 3

What is the work function, When a metal is illuminated with radiation with ...

When a metal is illuminated with radiation with a wavelength of 152 nm, photoelectrons are ejected with a velocity of 7.9 x 10 5 m/s.  What is the work function, in eV, of th

Rectangular coordinate system, A negative point charge of 10 -6 coulomb is...

A negative point charge of 10 -6 coulomb is located in air at the origin of a rectangular coordinate system. A second negative point charge of 10 -4 is situated on the positive x

What is artificial radioactivity and a-decay, Q. What is artificial radioac...

Q. What is artificial radioactivity? The phenomenon by which still light elements are made radioactive by artificial or induced methods is called artificial radioactivity. α

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd