One of the demons launched itself down the hall after her, only for the other to tackle it and the two of them to roll down the hall in a furry mass of wings, legs, and snapping teeth.
The Eskimo lifted his weighted boat with sheer-legs made of two paddles; he also had a tackle without sheaves, formed by reaving a greased thong through slits cut in the hide of a walrus.
It was here Donald Ryland planned to tackle a mixed rock and ice climb innocuously called Rosebud.
The whole combination conslitutes a tackle or purchase.
While Martha and Betsy, buoyed by our recent success, were eager to tackle the case, Quinn, not surprisingly, and yours truly to a lesser extent, were hesitant.
I will return to this topic in the disease chapter, but for now I needed to provide an argument to tackle the "ignorance" challenge.
The conditions which enable a pulley tackle to sustain a weight when the effort is removed may be examined, to a first approximation, if we assume that the internal friction acts in such a way as virtually to diminish FIG.
In some cases hauling tackle is used, in others power is applied by levers and ratchets to the rollers on which the girders travel.
Equation (I) becomes E/R= (I - b - c - M/R)/(i - a), and hence b+c +M /R is equal to or greater than unity when the load is self-sustained, and we thus obtain a relation between R and E in the form i - a/2 - c, which shows to a first approximation, that as c approaches unity a high efficiency is obtainable, while the self-sustaining power of the tackle is retained.
But the Genoese, who had helped with provisions and siege-tackle in the capture of Antioch and of Jerusalem, had both a stronger claim on the crusaders, and a greater interest in acquiring an eastern emporium.
Generally, in addition, wire cables are stretched across the span, from which lifting tackle is suspended.
As Leonidas of Tarentum wrote epigrams on fishermen, and one of them is a dedication of his tackle to Poseidon by Diophantus, the fisher, 8 is likely that the author of this poem was an imitator of Leonidas.
In a six-sheaved pulley tackle the relation between E and W may be expressed as W = E (1/k-h1/k 2 -}- /k 3 +i/k 4 +1/k 5 +1/k 6) = E(k 6 - i)/k 6 (le - I), and with a probable value of k = I-1 this gives W = 4.355 E instead of W =6E.
If, however, an artificial resistance can be introduced, to come into action only when the effort is removed, it is possible to obtain a tackle of greater efficiency.