Numerical:
(a) In a machine an effort of 20 kgf isu applied to lift a load of 80 kgf. What is its mechanical advantage?
(b) In a lever fulcrum is at one end at a distance of 40 cm from the load. Effort is at the other end at
a distance of 80 cm from the load.
(i) Draw the diagram to show the position of fulcrum, load and effort.
(ii) Find the length of load arm.
(iii) Find the length of effort arm.
(iv) Find the mechanical advantage of lever.
pls answer fast class 6
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