needed answer for this macro economics question

Question 2 Consider the level of per capita output along a balanced growth path (BGP) given by SK a / 1-a ASR y* (t ) = L(t) n + gA + 8. (1 - SR) gA 1. Derive the above expression for per capita output. 2. Find the value of Spthat maximises output per worker along the BGP. Why is it possible to do too much research according to this criterion? Argue briefly and concisely