A body of mass 1 kg is suspended by means of a spring and a thread between two walls as shown in the figure. The measure of both angles between the thread and the horizontal and the spring and the horizontal is shown in the figure. What is the initial acceleration ( $in m / s^{2}$ ) immediately after the string is cut

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Kx cos 3 7 0 = T cos 5 3 0 K x cos 53 + T cos 37 = m g ⇒ c o s 37 T ( c o s 2 5 3 0 + c o s 2 37 ) ​ = m g ⇒ T = 5 4 m g ​ K x + T + m g ​ = 0 K x does not change suddenly ⇒ K x + m g ​ = m a = − T ma = 5 4 m g ​ ⇒ a = 8 m / s 2

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