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JEE Main Physics Class 11 Work, Energy and Power Part 2 Questions
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© examsnet.com
Question : 58
Total: 100
A
0.5
kg
block moving at a speed of
12
ms
−
1
compresses a spring through a distance
30
cm
when its speed is halved. The spring constant of the spring will be ____
Nm
−
1
[25-Jun-2022-Shift-1]
Your Answer:
Validate
Solution:
1
2
m
V
2
=
1
2
k
x
2
+
1
2
m
(
v
2
)
2
⇒
3
8
m
v
2
=
1
2
k
x
2
⇒
k
=
3
4
×
1
2
×
144
9
×
100
=
600
⇒
600
© examsnet.com
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