Draw a labelled diagram of an arrangement of two pulleys, one fixed and other movable. In the diagram, mark the directions of all forces acting on it. What is the ideal mechanical advantage of the system ? How can it be achieved ?

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.

What is the ideal mechanical advantage of a single fixed pulley ? Can it be used as a force multiplier?

The diagram alongside shows a pulley arrangement. (a) Name the pulleys A and B. (b) In the diagram, mark the direction of tension on each strand of string. (c) What is the purpose of the pulley B? (d) If the tension is T, deduce the relation between T and E (e) What is the velocity ratio of the arrangement ? (f) Assuming that the efficiency of the system is 100%, what is the mechanical advantage ?

Draw a diagram of a pulley system of velocity ratio 4. Calculate its mechanical advantage efficiency is 90%.

You are given four pulleys and three strings. Draw a neat and labelled diagram to use them so as to obtain a maximum mechanical advantage equal to 8. In your diagram mark the directions of load L, effort E and tension in each strand. What assumptions have you made to Obtain the required mechanical advantage ?

Figure shows two hydrogen atoms. Show on as separate diagram all the electric forces acting on different particle of the system.

Name the type of a single pulley that has an ideal mechanical advantage equal to 2. draw a labelled diagram of the pulley mentioned by you.

Draw a neat labelled diagram to show the direction of two forces acting on a body to produce rotation in it. Also mark the point O about which the rotation takes place.

Draw a diagram to show a block and tackle pulley system having a velocity ratio of 3 marking the direction of load (L), effort (E) and tension (T).

A block and tackle system has velocity ratio 3. draw a labelled diagram of the system indicating the points of application and the direction of load L and effort E. A man can exert a pull of 200 kgf. (a) What is the maximum load he can raise with this pulley system if its efficiency is 60% ? (b) if the effort end moves a distance 60 cm, what distance does the load move ?