Lessons in elementary physics1884 |
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Σελίδα 30
... experiment . Suppose we have three separate strings tied together at the point A , and also two single fixed pulleys at B and C. The ob- ject of these pulleys is merely to change the direction of the force , so that , as in the figure ...
... experiment . Suppose we have three separate strings tied together at the point A , and also two single fixed pulleys at B and C. The ob- ject of these pulleys is merely to change the direction of the force , so that , as in the figure ...
Σελίδα 38
... experiment that the velocity was precisely the same in the case of each body . Previous to Newton , Galileo had arrived at a similar con- clusion as regards bodies of different weight ; but in advo- cating it he met with great ...
... experiment that the velocity was precisely the same in the case of each body . Previous to Newton , Galileo had arrived at a similar con- clusion as regards bodies of different weight ; but in advo- cating it he met with great ...
Σελίδα 39
... experiments , ob- viated this difficulty by taking advantage of another mode of action of the force of gravity . When a ... experiment , we have no reason to suppose that the mass of a pound of lead is the same as that of a pound of wool ...
... experiments , ob- viated this difficulty by taking advantage of another mode of action of the force of gravity . When a ... experiment , we have no reason to suppose that the mass of a pound of lead is the same as that of a pound of wool ...
Σελίδα 44
... Experiment A. - Suppose now that each of the boxes weighs 100 grammes , and that we put 400 grammes into the one and 450 into the other also let us take into account the pulley in our estimation of the weight of the boxes . is clear ...
... Experiment A. - Suppose now that each of the boxes weighs 100 grammes , and that we put 400 grammes into the one and 450 into the other also let us take into account the pulley in our estimation of the weight of the boxes . is clear ...
Σελίδα 45
... Experiment B. - Hav- ing made Experiment A , and ascertained that the result agrees with our calculations , let us now double our moving force , اسيل سياسيا سياسيا keeping however the same total mass . FIG . 14 . Thus let there be 375 ...
... Experiment B. - Hav- ing made Experiment A , and ascertained that the result agrees with our calculations , let us now double our moving force , اسيل سياسيا سياسيا keeping however the same total mass . FIG . 14 . Thus let there be 375 ...
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acting action actual angle appear applied atmosphere attraction ball become body called carriage cause centimetre centre contains continue denote density direction distance double earth effect electricity energy equal examples Experiment extremity fact fall force friction give given glass grammes gravity half hand heat hence increased instance iron kilogrammes kind law of motion length less light liquid lower magnet manner mass means mercury metres miles millimetre motion moving nature opposite particles passed pendulum piston plane plate position precisely pressure produced proportional quantity rays reach regard remains represent resistance rest result round seen separation side similar solid sound space square stone string substance suppose surface temperature tending tube unit upwards various vary velocity vertical vessel vibration visible volume wave weight whole
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