ballistic pendulum initially at rest. projectile with mass m=10g hits object M=2kg and remains stuck and it goes up to height h=20cm. no air friction.

im foreign and i tried to translate it i hope it s clear, i'm in ninth grade and i guess i didnt really understand the theory. i tried to solve it but i dont think its correct.

can someone also explain the solution to me please?

edit:i think i figured it out

im foreign and i tried to translate it i hope it s clear, i'm in ninth grade and i guess i didnt really understand the theory. i tried to solve it but i dont think its correct.

can someone also explain the solution to me please?

edit:i think i figured it out

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