Why did this ropewalker stretch his arms to keep balance?
Why did this ropewalker stretch his arms to keep balance?
The moment of inertia of rod with its mass distributed uniformly and a perpendicular axis through one of its ends (its length 1) Solution: J=x'dm dm=pds m dm 0 I m
The moment of inertia of rod with its mass distributed uniformly and a perpendicular axis through one of its ends (its length l) o x z dx dm x J x dm2 Solution: dx l m dm dx l l x l m dx l m J x 0 3 0 2 3 1 2 3 1 J ml
Find the moment of inertia of a uniform disk about axis through its center and perpendicular to the plane of the disk solution dm o 2n rdr J=∫rdm=2mo∫r J=2ra"rdr πoR41 2
Find the moment of inertia of a uniform disk about axis through its center and perpendicular to the plane of the disk solution： o r dr R dm 2 rdr J r dm2 r dr 3 2 R J r dr 0 3 2 2 4 2 1 2 mR R