Question

the force required to pull the spring upto 12cm is 120N what is the requrd work to pull a spring another 12 cm​

Answer 1

Explanation:

Work done in stretching a spring to x length is W=

2

1

kx

2

∴ Work one in stretching from x

1

to x

2

is proportional to W∝x

2

2

−x

1

2

hence

W

10,20

W

20,30

=

300

500

so, 10 to 20 takes less work when compared to 20 to 30.