Question

In a lifting machine, an effort of 500 N is to be moved by a distance of 20 m to raise a load of 10,000 N by a distance of 0.8 m. Determine the velocity ratio and mechanical advantage.

• A. 25 and 20
• B. 23 and 22
• C. 20 and 30
• D. 25 and 35

Answer 1

The correct option is A 25 and 20

Distance moved by effort is 20m,that of load is 0.8m

$VR=\frac{E{}_d}{L{}_d}$

$VR=\frac{20}{0.8}$

$VR=25$

the load is 10,000N and effort=500N

$MA=\frac{load{}_d}{effort{}_d}$

$MA=\frac{10000}{500}$

$MA=20$