A Laboratory Course in Everyday PhysicsMacmillan, 1931 - 205 σελίδες |
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Σελίδα 3
... weight X weight arm = force X force arm . If there are a number of weights on each side of the fulcrum , the lever is balanced when the sum of the moments on one side is equal to the sum of the moments on the other . Lever appliances ...
... weight X weight arm = force X force arm . If there are a number of weights on each side of the fulcrum , the lever is balanced when the sum of the moments on one side is equal to the sum of the moments on the other . Lever appliances ...
Σελίδα 8
... weight Q of 20 lb. , because according to the lever law the wheel and axle balances when Weight weight arm force X force arm X = Weight 6 10 X 12 = Weight = IO X 12 6 = 20 lb. The windlass , Fig . 7 , is one form of wheel and axle . It ...
... weight Q of 20 lb. , because according to the lever law the wheel and axle balances when Weight weight arm force X force arm X = Weight 6 10 X 12 = Weight = IO X 12 6 = 20 lb. The windlass , Fig . 7 , is one form of wheel and axle . It ...
Σελίδα 14
Carleton John Lynde. In ( 2 ) there are two ropes supporting a total weight ( pulley + weight ) of 15 lb .; each rope supports only half this weight and the force necessary is half the weight , or 7 lb. In ( 3 ) three ropes support a total ...
Carleton John Lynde. In ( 2 ) there are two ropes supporting a total weight ( pulley + weight ) of 15 lb .; each rope supports only half this weight and the force necessary is half the weight , or 7 lb. In ( 3 ) three ropes support a total ...
Περιεχόμενα
CHAPTER | 1 |
CHAPTER II | 13 |
CHAPTER III | 20 |
Πνευματικά δικαιώματα | |
16 άλλες ενότητες δεν εμφανίζονται
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
amperes appliances armature atmosphere B. T. U. of heat bell body boiling point Boyle's law British Thermal Unit calories carbon centimeter coil cold water compressed convection cooled copper cubic cylinder Daniell cell density diagram direction distance dynamo electric current electromagnet electromotive force engine equal evaporation example exerted expands experiment fire flask foot pounds force arm fruit press fulcrum gases glass gram hot-water induced current iron jackscrew Joule's law lamp latent heat Leclanché cell lens lever lines of force liquid magnetic lines measure mercury metal meter molecules motor moves north pole object Ohm's law ohms Pascal's law passes pipe piston placed plate poundals pressure produced radiation rays resistance screw shown in Fig sound south pole square inch steam stove stroke substance surface tank temperature thermometer tube turned vacuum valve velocity vibration volts volume warmed watts waves weight arm wire