A laboratory manual in physics, to accompany Black and Davis' "Practical physics for secondary schools," (1913)
Black, Newton Henry, 1874- [from old catalog] · New York, The Macmillan company · leaf 28
force mustbe applied to produce equilibrium and at what point and inwhat direction must it be applied ? INCLINED PLANE 13 EXPERIMENT 6 INCLINED PLANE How does the effort required to pull a loaded car up an in-clined plane depend on the grade ? Smooth board.Support for one end.Halls car. Spring… … Fig. 7 this is a little more than would be required if friction couldbe entirely eliminated. But if the car is allowed slowly toroll down the incline, the effort required to hold it back willbe slightly less because of the friction. Therefore take themean or average of these two pulls, as the force…
Physics
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