Physics 12 U2L8 The Lawn Mower Problem

[GeoriyuuLomioka]

I am in university right now, but I still often come back and revise the concepts Mr Dueck taught me in high school. For example, in today's lecture the Lawn Mower question has again been presented and I found myself forgetting the steps. However, after visiting this video again later, everything starts to make sense again. Thank you so much, Mr. Dueck!

[baIec]

Is this what the experts refer to as "the lawns of physics" ?

[duelingdinos]

I have a question:
Why do you add mg and Fy in the first problem then substrate them in the second to find Fn?