Civil Engineering - Applied Mechanics - Discussion
Discussion Forum : Applied Mechanics - Section 1 (Q.No. 41)
41.
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is
Discussion:
8 comments Page 1 of 1.
Siddhi said:
2 years ago
Mechanical advantage (MA) = Load (W)/Effort (P).
MA = W/P = 500/25 = 20.
Velocity ratio (VR) = (Distance moved by the effort (Y))/(Distance moved by the load (X)).
VR = Y/X = 650/13 = 50.
Efficiency = MA/VR = 20/50 = 0.4 i.e. 40%.
Option B is the right.
MA = W/P = 500/25 = 20.
Velocity ratio (VR) = (Distance moved by the effort (Y))/(Distance moved by the load (X)).
VR = Y/X = 650/13 = 50.
Efficiency = MA/VR = 20/50 = 0.4 i.e. 40%.
Option B is the right.
Siddhi study point said:
2 years ago
40% is the correct answer.
Hence option B is right.
Hence option B is right.
Naafay Achakzai said:
3 years ago
Weldone, Thanks @Abhay.
Hitman said:
6 years ago
Most perfect and easy solution, Thanks @Nikil.
Nikil said:
7 years ago
Efficiency = (output)/(input)
Output = load*distance covered by the load.
Input = effort*distance through which the efforts act.
Efficency = (500*13)/(25*650) = 0.4.
Hence efficiency in % would be 40%.
Output = load*distance covered by the load.
Input = effort*distance through which the efforts act.
Efficency = (500*13)/(25*650) = 0.4.
Hence efficiency in % would be 40%.
Abhay said:
8 years ago
Mechanical advantage (MA) = Load (W)/Effort (P).
MA = W/P = 500/25 = 20.
Velocity ratio (VR) = (Distance moved by the effort (Y))/(Distance moved by the load (X)).
VR = Y/X = 650/13 = 50.
Efficiency = MA/VR = 20/50 = 0.4 i.e. 40%.
MA = W/P = 500/25 = 20.
Velocity ratio (VR) = (Distance moved by the effort (Y))/(Distance moved by the load (X)).
VR = Y/X = 650/13 = 50.
Efficiency = MA/VR = 20/50 = 0.4 i.e. 40%.
Niraj kareliya said:
8 years ago
Efficient is equals to MA/VR and MA is equals to W/P and VR is equaled to Y/X.
Harshit said:
10 years ago
Efficiency = m.a/w.p*100.
m.a = w/p = 500/25 = 20.
v.r = y/x = 650/13 = 50.
N = 20/50*100 = 40%.
m.a = w/p = 500/25 = 20.
v.r = y/x = 650/13 = 50.
N = 20/50*100 = 40%.
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