Question 319: Properties of Matter

Question

When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L + $$l$$). The elastic potential energy stored in the extended wire is :

Accepted Answer

Elastic potential energy
U = $${1 \over 2}$$ (work done due to gravity)
= $${1 \over 2}$$Mgl

Answer

Mgl

Answer

mgL

Answer

$${1 \over 2}$$Mgl

Answer

$${1 \over 2}$$MgL

Properties of Matter

When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L + $l$). The elastic potential energy stored in the extended wire is :

Choose the correct answer: