m1 = 1.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 60 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.4 kg that hangs vertically. The system starts from rest with the spring unextended

Question

b) What is the speed of block m2 when the extension is 40 cm?

Answer 1

Sigh..."as shown".
Perhaps the amazing Kreskin can help you.

Answer 2

kreshnik ? loooool