a small 50 g block slides down a frictionless surface through height

A small 50 g block slides down a frictionless surface through height h = 20 cm and then sticks to a uniform rod of mass 100 g and length 40 cm. The rod pivots about point O through angle Θ before momentarily stopping. Find Θ.

[marcellarevilla]

U save my life. I couldn't sleep all night thinking about this exercise, and now all have sence. Love u bro ❤❤❤

[xxstealerxx]

honestly you deserve way more views. Thank you so much

[ericdeng]

legends never die, thank you so much.

[makohanicholas]

Thank you so much. God bless the works of your hands

[Vedsten]

When you equal your rotational kinetic energy to your gravitational potential energy of the rod and block, wouldn't you need to have a an initial gravitational potential energy of the rod because the center of mass is still has a height?

[Yamini-oigk]

How can we conserve Ang momentum when comp of mg has some. Torque abt hinge point

[yousifnawar]

im sorry but I don't understand how the other H is H/2