Help mechanics

Alevelhelp.1

Hey! I don’t understand the last step I mean how do I know that K=1 and that it satisfies both equations. Plz help

(edited 1 year ago)

Reply 1

davros

Original post by Alevelhelp.1

Hey! I don’t understand the last step I mean how do I know that K=1 and that it satisfies both equations. Plz help

Doesn't the green writing explain it? You need both i and j components to be 0; the former gives you the value of t and then that forces k = 1 for the j-component.

Reply 2

Alevelhelp.1

Original post by davros

Doesn't the green writing explain it? You need both i and j components to be 0; the former gives you the value of t and then that forces k = 1 for the j-component.