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The ratio of the load to the effort...

The ratio of the load to the effort

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Mechanical advantage is less than 1 when the fulcrum is closer to the load than the effort.

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A block and tackle system has V.R. = 5. Draw a neat labelled diagram of a system indicating the direction of its load and effort.

The MA for a lever if the load is 150 N and the effort is 100 N is

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).

The diagram alongside shows an arrangement of three pulleys A,B and C. the load is marked as L and the effort as E. (a) Name the pulleys A,B and C. (b) Mark in the diagram the directions of load (L), effort (E) and tension T_1 and T_(2) in the two strings. (c) How are the magnitudes of L and E related to the tension T_(1) ? (d) Calculate mechanical advantage and velocity ratio of the arrangement. (e) What assumptions have you made in parts (c) and (d) ?