Answer to Question #164313 in Physics for Andu

Question

4. The model of the winged scale is shown. a) What force will the spring exert on the left arm of the scale, when the body with mass m = 1500 g is placed on the plate. The mass of the plate and the ruler are not taken into account b) How long the spring extends, when it is known that to extend it by 1 cm the force 300 N. must be applied

Answer 1

1)

$$F=mg=(1.5)(9.8)=14.7\ N$$

2)

$$x=x_0\frac{F}{F_0}=1\frac{14.7}{300}=0.05\ cm$$