Question

A machine overcomes a resistance of 1600 N through a distance of 0.12 m, when an effort of 400 N acts

through a distance of 0.96 m. Calculate (i) VR (ii) MA (iii) efficiency of the machine.​

Answer 1

Answer:

given =

L =1600N

d = 0.12m

E = 400N

D = 0.96m

to find = i) VR (ii) MA (iii) efficiency of the machine.​

solution :-

velocity ratio = D /d =  0.96 / 0.12

                                 =  8

mechanical advantages = L / E

                                        =  1600 / 400

                                        =  4

% of ffeciency

of machine =  M.A /V.R X 100

                  =   4/ 8 X 100

                 =   50%

the velocity ratio is 8

mechanical advantages = 4

and % of effeciency of machine is 50%