Derive a relationship between mechanical advantage, velocity ratio and efficiency of a machine.

(a) State the relationship between mechanical advantage, velocity ratio and efficiency. (b) Name the term that will not change for a machine of a given design.

With reference to the term mechanical advantage, velocity ratio and efficiency of a machine, name and define the term that will not change for a machine of a given design.

The correct relationship between mechanical advantage (M.A.) velocity ratio (V.R.) and efficiency (eta) is:

Write a relationship between the mechanical advantage (M. A.) and velocity ratio (V. R.) of an ideal machine.

Define mechanical advantage of a lever.

A block and tackle system has 5 pulleys. If an effort of 1000 N is needed in downward direction to raise a load of 4500 N, calculate: (a) the mechanical advantage, (b) the velocity ratio, and (c) the efficiency of the system

Draw a diagram of a combination of three movable pulleys and one fixed pulley to lift up a load. In the diagram, show the directions of load, effort and tension in each strand. Find : (i) the mechanical advantage, (ii) the velocity ratio, and (iii) the efficiency of the combination, in the ideal situation.

Relationship between given pair is :