Question

in parallelogram ABCD, shown here, with altitude BE, BC=10, AE:DE=3:2 and AE:BE=2:1. What percent of the figure is shaded trapezoid BCDE?

Answer 1

Answer:

A four pulley system is used to lift some load of 180 newton. If the efficacy of the pulley system is 80%, find

a.Effort applied

b. Output work when the load is lifted uo to height

6metres.

C. Input work

d. Mechanical advantage