Respuesta :
The value of actual machine advantage (MA) is 2, velocity ration (VR) is 2.5 and efficiency η is 80%.
Calculation:
It is given that the radius of the wheel is 50 cm, radius of axle is 20 cm, load is 2000 N and effort is 1000 N.
Let, R = 50 cm
r = 20 cm
L= 2000 N
E = 1000 N
We have to calculate actual machine advantage, velocity ratio and efficiency.
We know that,
- Actual machine advantage is the ratio of load and effort.
MA=L/E
=2000/1000
=2
- Velocity ratio is obtained by the ratio of radius of wheel to the radius of axle.
VR=R/r
=50/20
=2.5
- Efficiency is the percentage of the ratio of actual advantage and velocity ration.
η=(MA/VR)*100
=(2/2.5)*100
=(0.8)*100
=80%
Since your question is incomplete, your complete question might be
"In a wheel and axel, the radius of the wheel is 50cm and that of the axel is 20 cm. If a load is 2000n is lifted by applying an effort of 1000n,calculate ma, vr and η."
Learn more about simple machine here,
https://brainly.com/question/18883736
#SPJ4
