trajectory described $(7$pts$)3$

Question $2(30$ pts$)$: Initially, both blocks are at rest and the spring is unstretched. Block $B$ is being pulled down by force $P,$ while block A starts moving up the ramp, stretching the spring.

Determine the velocity of the block $B$ after being pulled $0\mathrm{.}5$ m to the left $(16$ pts $)10$

Assume both blocks stop after block B moves $0\mathrm{.}5$ m down. What should be the value of the spring constant in this scenario? $(14$ pts $)7$

$m_A=10kg$

$m_B=5kg$

$P=300N$

$K=600N$

${}_K=0\mathrm{.}5$