B.A machine has a velocity ratio of 10. It is used to raise a load of 12000N by 5m using an effort of 1250 N.Find: (i) Work obtained from machine (ii) Mechanical advantage (iii) Efficiency of machine
Answers
Explanation:
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Answer:
(i) Work obtained = 12,500J
(ii) Mechanical advantage = 8
(iii) Efficiency of machine = 80%
Explanation:
Given :- V.R = 10
Distance moved by load = 5m
L = 2000N E = 1250N
(i) W = Effort ×
and , = V.R ×
= 10 × 5 = 50m
Therefore, (i) W = 250× 50 = 12,500 J
(ii) M.A = load/effort = 2000/250 = 8
now,
(iii) Efficiency of machine (η) = M.A/V.R
= 8/10
= 0.8
= 80%