Study the given lever and calculate the effort to the balance the load used in it ?
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solution given:

load distance [l.d.]=2m-1.5m=0.5m

effort distance [e.d.]=1.5m

load [l]=500N

effort[E]=?

we have

load ×load distance =effort ×effort distance

500N×0.5=effort ×1.5

effort =250/1.5=166.67N

so

effort =166.67N

Explanation:

i cant understand this at alllv

a. spokes of a wheel.

as indicated in the question radial contains rad, also found in radius, so the fracture's would span the radius.