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The spring of constant $k=120\frac{N}{m}$ is unstretched when the slider of mass $m=2\mathrm{.}0kg$ passes position $B.$ If the slider is released from rest in position $A,$ determine its speed as it passes points $B$ and $C.$ What is the normal force exerted by the guide on the slider at position C$?$ Neglect friction between the mass and the circular guide, which lies in a vertical plane. The distance $R=0\mathrm{.}8m.$

Answers

$V_B=$

i $\frac{m}{s}$

$v_C=\frac{m}{s}$

$N_C=$