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Question-59152




Question Number 59152 by Forkum Michael Choungong last updated on 05/May/19
Commented by Forkum Michael Choungong last updated on 05/May/19
In the figure 1 above a craw bar,ABC,  is shown being used to dig and lift  a heavy stone from the ground.    a) Mark with arrows on the diagram  the best point and direction of action  of the effort applied and the weight  of the stone.    b) Explain the effect of increasing  the distance ABC.
$${In}\:{the}\:{figure}\:\mathrm{1}\:{above}\:{a}\:{craw}\:{bar},{ABC}, \\ $$$${is}\:{shown}\:{being}\:{used}\:{to}\:{dig}\:{and}\:{lift} \\ $$$${a}\:{heavy}\:{stone}\:{from}\:{the}\:{ground}. \\ $$$$ \\ $$$$\left.{a}\right)\:{Mark}\:{with}\:{arrows}\:{on}\:{the}\:{diagram} \\ $$$${the}\:{best}\:{point}\:{and}\:{direction}\:{of}\:{action} \\ $$$${of}\:{the}\:{effort}\:{applied}\:{and}\:{the}\:{weight} \\ $$$${of}\:{the}\:{stone}. \\ $$$$ \\ $$$$\left.{b}\right)\:{Explain}\:{the}\:{effect}\:{of}\:{increasing} \\ $$$${the}\:{distance}\:{ABC}. \\ $$$$ \\ $$$$ \\ $$$$ \\ $$$$ \\ $$

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