Physics

Physics

Problem

A 0.30 kg0.30\,\text{kg} block on a frictionless horizontal surface is attached to a spring with force constant 40 N/m40\,\text{N/m}. The block is pulled to x=+0.10 mx = +0.10\,\text{m} from equilibrium and released from rest. Taking the +x+x direction to the right, what is the block’s initial acceleration? a) +13 m/s2+13\,\text{m/s}^2 b) −4.0 m/s2-4.0\,\text{m/s}^2 c) −13 m/s2-13\,\text{m/s}^2 d) +4.0 m/s2+4.0\,\text{m/s}^2

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