Question

A crowbar having the length of 1.75 m is used to balance a load of 500 N If the distance between the fulcrum and the load is 0.5 calculate MA and VR and efficiency

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Answer 1

load distance*l=effort distance*e

o.5*500=x*1.25

250/1.25=x

200=x

ma=load/effort

500/200

2.5

vr=ed/ld

1.25/0.5

2.5

effciency=ma/vr*100

100%