Wire can be broken by applying a load of 20 kg weight. the force required to break the wire of twice the diameter is
Answers
if radius is doubled, the force should be applied also be doubled.
r=2r¹.
d=2r.
d¹=2(2r¹)
d¹=4r¹
when d=2r, F=20.
now, d¹=4r¹ F¹=2(20)
:. the required Force F¹=40 kg weight..
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Answer:
Force to break wire = 80 kg
Step by step explanations :
Given that,
A wire can be broken by applying a load of 20 kg wt
here,
force = 20g
= 200N
let the force be F1
and the radius of the wire be r1
now,
diameter of the wire is doubled,
so,
thickness will also doubled,
on,
we know that,
Breaking stress is the characteristic of the material hence for two wires of same material having different thickness.
so,
let the force applied by the other mass on the wire of double diameter be F2
and radius of new wire be r2
now,
we know that,
ratio of force and square of radius of the 1st wire will equal to the force and square of radius of the second wire.
so,
F1/r1² = F2/r2²
here,
F1 = 200 N
r2 = 2r1
putting the values,
200/r1² = F2/r2²
200/r1² = F2/(2r1)²
200/r1² = F2/4r1²
800r1² = r1²F2
F2 = 800 N
so,