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) ?

The diagram alongside shows an arrangement of three pulleys A,B and

1.	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) ?
Answer» Answer :(a) A and B-movable pulleys, C-fixed PULLEY. (c) L=4`T_(1),E=T_(1),` (d) M.A.=4, V.R.=4 (e) The pulleys A and B are WEIGHTLESS and there is no friction.