Flag Engineering Entrance Exams> In a wire, when the elongation is 2 cm, t...
question mark

In a wire, when the elongation is 2 cm, the energy stored is E. if the wire is stretched by 10 cm, then the energy stored in the wire will be(a) E (b) 5E(c) 25E (d) 25/2E

Jayant Kumar , 10 Years ago
Grade 11
anser 1 Answers
Vikas TU

Last Activity: 4 Years ago

We know, potential energy of spring is given by (1/2)kx² where k is spring constant and x is stretched distance.

Here , x=2cm so, U=(1/2)k*2²=2k

For, x=10cm :-

E=(1/2)k*10²=50k=25(2k)=25U.

Final potential energy will be 25U.

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...

question mark
consider the figure of a single riveted lap joint as follows
Engineering Entrance Exams
0 Answer Available

Last Activity: 2 Year ago(s)

question mark
Hello, Can we learn and prepare for MHT-CET online ?
Engineering Entrance Exams
0 Answer Available

Last Activity: 3 Year ago(s)