Three wooden planks are fastened together by a series of bolts to form a column. the diameter of each bolt is 12-mm and the inner diameter of each washer is 16-mm, which is slightly larger than the diameter of the holes in the planks. determine the smallest allowable outer diameter d of the washers, knowing that the average normal stress in the bolts is 35 mpa and that the bearing stress between the washers and the planks must not exceed 8.5 mpa.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.