Question

A uniform plank with mass 20kg and length 12m extends 2m over the edge of a building. A 40kg crate is slid out on the plank. how far can the crate be pushed without toppling the plank?

A. 0.5m
B. 1m
C. 1.25m
D. 1.5m
E. 2m

Answer 1

1.5m