Question

5. A spring balance is used to weigh a fish. The combined mass of the fish and the pan is 1.50
kg. If the spring constant is 1200 N/m. What distance does the spring stretch?

Answer 1

• We know the formula

$\\ \rm\Rrightarrow x=\dfrac{2mg}{k}$

$\\ \rm\Rrightarrow x=\dfrac{2(1.5)(9.8)}{1200}$

$\\ \rm\Rrightarrow x=\dfrac{3(9.8)}{1200}$

$\\ \rm\Rrightarrow x=\dfrac{9.8}{400}$

$\\ \rm\Rrightarrow x=0.0245m$

2.45cm is distance