A steel wire of negligible mass, length L and cross-sectional area A has one end fixed. A ball of mass m is attached to the other end of wire. The wire and ball are rotating with an angular velocity w in horizontal plane. If ∆L is expansion produced in wire then Young's modulus of wire is (Options are given in the attached photo)
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sorry bro no idea I can't understand anything
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Answer:
Answer Text
mL2ωAΔL
m
L
2
ω
A
Δ
L
mω2L2AΔL
m
ω
2
L
2
A
Δ
L
mω2LAΔL
m
ω
2
L
A
Δ
L
mωLAΔL
m
ω
L
A
Δ
L
Answer :
B
Answer Text
mL2ωAΔL
m
L
2
ω
A
Δ
L
mω2L2AΔL
m
ω
2
L
2
A
Δ
L
mω2LAΔL
m
ω
2
L
A
Δ
L
mωLAΔL
m
ω
L
A
Δ
L
Answer :
B
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