## Answers

Using work - energy theorem w_f = (j = k_f - U_f) - (K_i + V_i) = f .s - 0 - mg sin theta) - (0 + 12/ kx^2 + 0) = 0.8 times 40 cos 10 times 5 = en 40 x times sin 10 - 1/2 times 6000 times (0.15)^2 negative 31/5 ls = negative 6.94 s - 67.5 S = 2.748m

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