Lessons in Applied MechanicsMacmillan, 1891 - 512 σελίδες |
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Σελίδα 114
... supported by ac and bd . The tensions in these are equal , and each equal P ( see previous principle ) , as above . . ' . W = 2P , The actual construction of a block is shown here ( Fig . 83 ) , the hooks being for the attachment of ...
... supported by ac and bd . The tensions in these are equal , and each equal P ( see previous principle ) , as above . . ' . W = 2P , The actual construction of a block is shown here ( Fig . 83 ) , the hooks being for the attachment of ...
Σελίδα 115
... supporting the lower block , [ " may be odd or even ; in a pair of three - sheaved blocks it is 6 ; but we may have ... supports W , and or W = nP , Force ratio = n . Also if P move a distance , all the n plies shorten equal amounts , so ...
... supporting the lower block , [ " may be odd or even ; in a pair of three - sheaved blocks it is 6 ; but we may have ... supports W , and or W = nP , Force ratio = n . Also if P move a distance , all the n plies shorten equal amounts , so ...
Σελίδα 131
... supporting the lower pulley passes over the 8 in . diameter to the right , and the right - hand ply over the 7 in . diameter to the left ; the two loose ends are then connected , so the chain is endless , hanging in two loops , one ...
... supporting the lower pulley passes over the 8 in . diameter to the right , and the right - hand ply over the 7 in . diameter to the left ; the two loose ends are then connected , so the chain is endless , hanging in two loops , one ...
Σελίδα 133
... supporting the lower pulley passes over the 8 in . diameter to the right , and the right - hand ply over the 7 in . diameter to the left ; the two loose ends are then connected , so the chain is endless , hanging in two loops , one ...
... supporting the lower pulley passes over the 8 in . diameter to the right , and the right - hand ply over the 7 in . diameter to the left ; the two loose ends are then connected , so the chain is endless , hanging in two loops , one ...
Σελίδα 260
... supporting a weight P lbs . ; in this case we should naturally say the load is P lbs . But there must be an exactly equal action P on the bottom ( neglecting the weight of AB itself ) , which we should call the reaction of the ground ...
... supporting a weight P lbs . ; in this case we should naturally say the load is P lbs . But there must be an exactly equal action P on the bottom ( neglecting the weight of AB itself ) , which we should call the reaction of the ground ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
action actual angular velocity applied axle balance beam bearing belt bending body boom called centre circle coefficient compression connecting rod consider constant crank effort crank pin curve cylinder diagram diameter distance draw effect elastic Energy exerted engine equal equation example feet flange foot length friction ft.-lbs girder given hence Hooke's Law inch joint length lift load mean mean effective pressure measure moment of inertia moving neutral axis obtain ordinates parallel piece piston position plane practically preceding pressure produced pull pulley radius radius of gyration relative motion represent resistance result revolution revolutions per minute right angles rivet rope rotating scale screw shaft shearing shown simply sliding pair speed steam stress stroke surface tension tons turning pair velocity ratio W₁ weight wheel whole
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