A load of 600N is lifted by a lever by using the effort of 300N. If load distance and effort distance are 20 cm and 60 cm respectively. Calculate the mechanical advantage, velocity ratio and effici...
A load of 600N is lifted by a lever by using the effort of 300N. If load distance and effort distance are 20 cm and 60 cm respectively. Calculate the mechanical advantage, velocity ratio and efficiency of the lever.
Solution:
Load (L) = 600 N
Effort (E) = 300 N
Load distance (LD) = 20 cm
Effort distance (ED) = 60 cm
Mechanical Advantage (MA) = L/E = 600N / 300N = 2
Velocity Ratio (VR) = ED / LD = 60cm / 20cm = 3
Efficiency = MA / VR * 100
= 2/3 * 100
= 66.67%
Hence, the required MA of the machine is 2,...