## Elements of Natural Philosophy |

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Page 1

X Force is recognized as acting in two ways : Io so as to compel rest or to prevent

change of motion , and 2° so as to

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

X Force is recognized as acting in two ways : Io so as to compel rest or to prevent

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 ...

Page 3

The definition in last section may evidently be extended to a plane polygon , and

the integral change of direction , or the angle between the first and last sides , is

then the sum of its exterior angles , all the sides being

The definition in last section may evidently be extended to a plane polygon , and

the integral change of direction , or the angle between the first and last sides , is

then the sum of its exterior angles , all the sides being

**produced**, each in the ... Page 15

SZ is ' inversely as SY , that ... But if another point U be taken in YS

that YS . SU is constant , the locus of U is easily seen to be a circle . Hence the ...

**Produce**YS to cut the circle again in 2 . Then YS . SZ is - constant ; and thereforeSZ is ' inversely as SY , that ... But if another point U be taken in YS

**produced**, sothat YS . SU is constant , the locus of U is easily seen to be a circle . Hence the ...

Page 21

Those common kinds of mechanism , for

motion , or vice versa , in which a crank moving in a circle works in a straight slot

belonging to a body which can only move in a straight line , fulfil strictly the

definition ...

Those common kinds of mechanism , for

**producing**rectilineal from circularmotion , or vice versa , in which a crank moving in a circle works in a straight slot

belonging to a body which can only move in a straight line , fulfil strictly the

definition ...

Page 22

On ce and ce describe a parallelogram SQCQ ' ; and through S draw SR

perpendicular to BA '

equal and parallel lines O ' S , CQ , on CR . Hence CR = CP + CP ; and therefore

the point R ...

On ce and ce describe a parallelogram SQCQ ' ; and through S draw SR

perpendicular to BA '

**produced**. We have PR = CP ( being projections of theequal and parallel lines O ' S , CQ , on CR . Hence CR = CP + CP ; and therefore

the point R ...

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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 important 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