MCQ
Find the maximum tension in the spring if initially spring at its natural length when block is released from rest.
- A$4\, m g$
- B$\frac{m g}{2}$
- C$\frac{3 \,m g}{2}$
- ✓$2\, mg$
✓
Answer
Correct option: D.
$2\, mg$
d
The maximum force in the spring extension is given by,
The maximum force in the spring extension is given by,
$F_{max}=k x$
Consider the equilibrium,
$\frac{1}{2} k x^{2}=m g x$
$k x=2 m g$
Substitute $2 m g$ for $k x$ in equation $(I).$
$F_{\operatorname{max}}=2 m g$
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