A machine has an overcome of 60percent.If the machine is required to overcome a load of 30N with a force 20N.calculate it velocity ratio?
What do you mean it has and "overcome"?
efficiency maybe ?
if it were perfect then
V2/V1 = F1/F2
= 3/2 = 1.5
but if efficiency is only .6
then we really must lift 30/.6 = 50 N with 20 N
so we need a ratio of 5/2 = 2.5
Machine of efficiency 80% is used to raise a body of mass 75kg through a vertical height of 3m in 30s. Calculate the power input .(g=10m^s
To calculate the velocity ratio of a machine, we need to use the formula:
Velocity Ratio = Load / Effort
In this case, the Load is 30N and the Effort is 20N.
Velocity Ratio = 30N / 20N
Simplifying the ratio gives:
Velocity Ratio = 1.5
Therefore, the velocity ratio of the machine is 1.5.
To calculate the velocity ratio of a machine, we need to first determine the effort force and the load force.
In this case, the effort force is given as 20N, and the load force is 30N.
The formula for calculating the velocity ratio is:
Velocity Ratio = Load Force / Effort Force
Using the given values, we have:
Velocity Ratio = 30N / 20N = 1.5
Therefore, the velocity ratio of the machine in this case is 1.5.