Figure (8-E12) shows two blocks A and B, each having a mass of 320 g connected by a light strin

Step 1: Calculate the elongation of the spring, (x), using the equation (cos(theta) = frac{mg}{k

Question

Figure (8-E12) shows two blocks $A$ and $B$, each having a mass of $320 \mathrm{~g}$ connected by a light string passing over a smooth light pulley. The horizontal surface on which the block $A$ can slide is smooth. The block $A$ is attached to a spring of spring constant $40 \mathrm{~N} / \mathrm{m}$ whose other end is fixed to a support $40 \mathrm{~cm}$ above the horizontal surface. Initially, the spring is vertical and unstretched when the system is released to move. Find the velocity of the block $A$ at the instant it breaks off the surface below it. Take $g=10 \mathrm{~m} / \mathrm{s}^{2}$

          Figure (8-E12) shows two blocks $A$ and $B$, each having a mass of $320 \mathrm{~g}$ connected by a light string passing over a smooth light pulley. The horizontal surface on which the block $A$ can slide is smooth. The block $A$ is attached to a spring of spring constant $40 \mathrm{~N} / \mathrm{m}$ whose other end is fixed to a support $40 \mathrm{~cm}$ above the horizontal surface. Initially, the spring is vertical and unstretched when the system is released to move. Find the velocity of the block $A$ at the instant it breaks off the surface below it. Take $g=10 \mathrm{~m} / \mathrm{s}^{2}$

Added by Jacqueline S.

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