## Elements of Natural Philosophy |

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Page 1

Force is recognized as

change of motion , and 2 ° so as to produce or to change motion . Dynamics ,

therefore , is divided into two parts , which are conveniently called STATICS and

...

Force is recognized as

**acting**in two ways : 1 ° so as to compel rest or to preventchange of motion , and 2 ° so as to produce or to change motion . Dynamics ,

therefore , is divided into two parts , which are conveniently called STATICS and

...

Page 37

Hence , just as in § 38 a uniform acceleration ,

direction of motion of a point , produces a change in the direction of motion , but

does not influence the velocity ; so , if a body be rotating about an axis , and be ...

Hence , just as in § 38 a uniform acceleration ,

**acting**perpendi . cularly to thedirection of motion of a point , produces a change in the direction of motion , but

does not influence the velocity ; so , if a body be rotating about an axis , and be ...

Page 59

It has been shown already in what sense the term ' point ' is to be taken , and ,

therefore , in what way a force may be imagined as

however , the place of application of a force is always either a surface or a space

of ...

It has been shown already in what sense the term ' point ' is to be taken , and ,

therefore , in what way a force may be imagined as

**acting**at a point . In reality ,however , the place of application of a force is always either a surface or a space

of ...

Page 61

... above by Newton , but first introduced practically by Gauss in connexion with

national standard masses , furnishes us with what we want . According to this

principle , the standard or unit force is that force which ,

standard ...

... above by Newton , but first introduced practically by Gauss in connexion with

national standard masses , furnishes us with what we want . According to this

principle , the standard or unit force is that force which ,

**acting**on a nationalstandard ...

Page 62

... or , better , the gramme ; the unit of space the , British standard foot , or , better ,

the centimetre ; and the unit of time the mean solar second . We accordingly

define the British absolute unit force as ' the force which ,

... or , better , the gramme ; the unit of space the , British standard foot , or , better ,

the centimetre ; and the unit of time the mean solar second . We accordingly

define the British absolute unit force as ' the force which ,

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### Common terms and phrases

acceleration according acting action amount angle angular applied attraction axes axis body called centre centre of inertia circle component condition consider constant corresponding couple course curvature curve denote density described determined direction displacement distance divided effect elastic elements energy equal equations equilibrium expression figure fixed fluid force friction give given gravity harmonic Hence increase infinitely small instant interval kinetic length less mass matter mean measured method motion moving natural normal observation opposite parallel particle passing path period perpendicular plane portion position potential practical pressure principle produce projection proportional quantity radius reference relative remain remarkable resistance respectively rest resultant right angles rigid rotation round sides simple solid space spherical square straight strain stress suppose surface theory turned uniform unit velocity vertical weight whole wire