## Elements of Natural Philosophy, Volume 1 |

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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 : I ° 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 35

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**perpendicularly 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 55

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 57

According to this principle , the standard or unit force is that force which ,

on a national standard unit of matter during the unit of time , generates the unit of

velocity . This is known as Gauss ' absolute unit ; absolute , because it furnishes a

...

According to this principle , the standard or unit force is that force which ,

**acting**on a national standard unit of matter during the unit of time , generates the unit of

velocity . This is known as Gauss ' absolute unit ; absolute , because it furnishes a

...

Page 58

Our present application is , that the force of gravity at Edinburgh is 32.2 times the

force which ,

foot per second ; in other words , 32.2 is the number of absolute units which ...

Our present application is , that the force of gravity at Edinburgh is 32.2 times the

force which ,

**acting**on a pound for a second , would generate a velocity of onefoot per second ; in other words , 32.2 is the number of absolute units 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 evidently expression figure fixed fluid force friction give given gravity harmonic Hence important increase infinitely small instant interval kinetic length less mass matter mean measured method motion moving natural normal observation opposite parallel particle passing path perpendicular plane portion position potential practical pressure principle problem produce projection proportional quantity radius reference relative remain remarkable respectively rest resultant right angles rigid rotation round sides simple solid space spherical square straight strain stress suppose surface theory turned uniform unit velocity weight whole wire