The potential energy of a certain spring when stretched through a distance s is 10 J .The amount of work done (in joule)that must be done on this spring to stretch it through an additional distance s, will be
a)
20
b)
10
c)
30
d)
40
The potential energy of a certain spring when stretched through a distance s is 10 J .The amount of work done (in joule)that must be done on this spring to stretch it through an additional distance s, will be
a)
20
b)
10
c)
30
d)
40
Question ID - 52054 | SaraNextGen Top Answer
The potential energy of a certain spring when stretched through a distance s is 10 J .The amount of work done (in joule)that must be done on this spring to stretch it through an additional distance s, will be
a)
20
b)
10
c)
30
d)
40
|
The potential energy of a certain spring when stretched through a distance s is 10 J .The amount of work done (in joule)that must be done on this spring to stretch it through an additional distance s, will be |
|||||||
|
a) |
20 |
b) |
10 |
c) |
30 |
d) |
40 |
1 Answer
127 votes
Answer Key / Explanation : (c) -
|
(c) Work done for a distance s is given by
Where k is spring constant. Now, work done for a distance 2 s is given by
∴Required work done =40-10=30 J |
127 votes
Answer Link
127