## Elements of Natural Philosophy |

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Page 11

... describes spaces proportional to the squares of the times elapsed since the

commencement of the motion . This is the case of a body falling vertically in

vacuo under the action of

interval is that ...

... describes spaces proportional to the squares of the times elapsed since the

commencement of the motion . This is the case of a body falling vertically in

vacuo under the action of

**gravity**. IM this case the space described in anyinterval is that ...

Page 53

stool to the rigid body to which these six planes belong . Thus we have a ...

**Gravity**maintains positive determinate pressures on the five ... Substitute for**gravity**a spring , or a screw and nut ( of not infinitely rigid material ) , binding thestool to the rigid body to which these six planes belong . Thus we have a ...

Page 54

The movement may be made very frictionless when the plane is horizontal , by

weighting the move . able body so that its centre of

foot that rests in the hollow . One or two guard feet , not to touch the plane except

...

The movement may be made very frictionless when the plane is horizontal , by

weighting the move . able body so that its centre of

**gravity**is very nearly over thefoot that rests in the hollow . One or two guard feet , not to touch the plane except

...

Page 59

Force may be of ' divers kinds , as pressure , or

attractive or repulsive actions of electricity , magnetism , etc . 184 . The three

elements specifying a force , or the three elements which must be known , before

a ...

Force may be of ' divers kinds , as pressure , or

**gravity**, or friction , or any of theattractive or repulsive actions of electricity , magnetism , etc . 184 . The three

elements specifying a force , or the three elements which must be known , before

a ...

Page 60

We have P = Wg . The force of

. According to the system commonly followed in mathematical treatises on

dynamics till fourteen years ago , when a small instalment of the first edition of the

...

We have P = Wg . The force of

**gravity**on the body , in gravitation units , is W . 186. According to the system commonly followed in mathematical treatises on

dynamics till fourteen years ago , when a small instalment of the first edition of the

...

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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