\(\left[ {{\rm{As }}k = 15\;N/m} \right]\)
\(\therefore \) Acceleration = \(\frac{{{\rm{Force}}}}{{{\rm{Mass}}}} = \frac{3}{{0.3}} = 10\,m/{s^2}\)
[$\sin \left(35^{\circ}\right)=0.573, \cos \left(35^{\circ}\right)=0.819$ $\left.\sin \left(110^{\circ}\right)=0.939, \cos \left(110^{\circ}\right)=-0.342\right]$