material of the belt

material of the pulley

uneven extensions and contractions due to varying tension

all of the above

12

14

18

24

the pitch of the thread is 24 mm and depth is 2 mm

cross-sectional area of the threads is 24 mm²

the nominal diameter of bolt is 24 mm and pitch is 2 mm

the effective diameter of bolt is 24 mm and there are 2 threads per cm

d + 17 mm

2 d + 13 mm

2 d + 20 mm

3.5 d

larger than

smaller than

equal to

none of these