This is a unit which really many find quite difficult. To help yourself out you must learn Newton’s 1^{st}, 2^{nd} and 3^{rd} law of forces. Without this knowledge you cannot succeed in explaining or reasoning out most questions. Also there is a basic principle of coplanar forces producing a resultant and therefore acceleration. It is simple as it is…

Big – Small = Resultant in the Direction of Big!

There is an easy way to remember the laws….

1) Inertia – “Objects” – don’t want to move but when moving find it difficult to stop

2) F=ma – or ratio F/m = a which is more appropriate. The acceleration on a fat person is found as the ratio of the force of the push to the mass of the person

3) Opposites – for every force their is an opposite. Fat person on chair pushing down, chair pushes up to support weight with equal and opposite force.

Simple idea of F=ma shows that Big-Small = acceleration in direction of Big.

So F = ma ............... T - mg = ma etc....

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AS_9_2_Pully Explaination.flv

Simple idea of F=ma shows that Big-Small = acceleration in direction of ...

Simple idea of F=ma shows that Big-Small = acceleration in direction of Big.

So F = ma ............... T - mg = ma etc....

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F=ma, The Mechanics Revision Song by Mr Chadwick

Mr Chadwick and his Further Maths Class singing the Mechanics Revision ...

Mr Chadwick and his Further Maths Class singing the Mechanics Revision Song. Learn it and you can pass M1. guaranteed.

Lyrics: When the force on one side's more than the other side, ...F=ma.

If the speed seems to change in an up or down way F=ma.

If there's string, just one piece of string, that are connecting, 2 or more a thing, there is tension.

It is the same all a through the way, all a through the way, make a no mistake, the same tension.

Just resolve up the plane, down the plane, in the way of the motion.

Perpendicular forces we must-a ignore as we go.

It is Newton's whose law you must not-a ignore when there's motion.

F's miu r when you are on rough sides or inclines F=ma.[+] Show More

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Westminster Bridge London Eddy Currents

Great video on Westminster Bridge, shows the of ripple waves, creating an ...

Great video on Westminster Bridge, shows the of ripple waves, creating an interference pattern on a bridge support.

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Newton's Third Law Part 1 Physics Lessons

http://www.physicshelp.ca GO AHEAD and click on this site...it wont hurt. ...

http://www.physicshelp.ca GO AHEAD and click on this site...it wont hurt. Free simple easy to follow videos all organized on our website Key Words: Newton's third 3rd law dynamics mechanics free body diagrams physics ... lesson help fbd explained action reaction applied force[+] Show More

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A Common Misconception about Newton's Third Law Force Pairs (or Action-Reaction Pairs)

Proof that the Force Normal and the Force of Gravity are not a Newton’s ...

Proof that the Force Normal and the Force of Gravity are not a Newton’s Third Law Force Pair.

0:00 Intro 0:26 Drawing the Free Body Diagram 1:02 Not a Newton’s Third Law Force ...Pair 1:37 The Force Normal Force Pair 1:55 The Force of Gravity Force Pair

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