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Obtain the relation between mechanical a...

Obtain the relation between mechanical advantage, velocity ratio and efficiency.

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Define mechanical advantage.

In a wheel and axle machine the radii of the wheel and axle are 0.5 m and 0.05 m,respectively . A weight of 100 kg is raised when it is hanging by a rope from the axle by applying a force of 12 kg on the circumference of the wheel . Find the mechanical advantage, velocity ratio and efficiency of this machine.

(i) With reference to the terms, mechanical advantage, velocity ratio and efficiency of a machine, name the term that will not change for a machine of a given design. (ii) Define the term stated by you in part (i).

What is the ratio between mechanical advantage and velocity ratio of an ideal machine.

What is the ratio between mechanical advantage and velocity ratio of a practical machine.