Figure shows a system of four pulleys. The upper two pulleys are fixed and the lower two are movable. (a) Draw a string around the pulleys. Also show the point of application and direction in which the effort E is applied. (b) What is the velocity ratio of the system ? (c) How are load and effort of the pulley system related ? (d) What assumption do you make in arriving at your answer in part (c) ?

Figure shows a system of four pulleys. The upper two pulleys are fix

1.	Figure shows a system of four pulleys. The upper two pulleys are fixed and the lower two are movable. (a) Draw a string around the pulleys. Also show the point of application and direction in which the effort E is applied. (b) What is the velocity ratio of the system ? (c) How are load and effort of the pulley system related ? (d) What assumption do you make in arriving at your answer in part (c) ?
Answer» Answer :(b) 4 (C) LOAD=`4xx`effort Assumption: (1) There is no friction in the pulley BEARINGS, (2) Weight of lower block of pulleys is NEGLIGIBLE, (3) The effort is applied downwards.