Aptitude Test Problems in Physics Science for Everyone by S Krotov ( PDFDrive.com )

(^150) Aptitude Test Problems in Physics
where d 1 and d 2 are the arms of the forces mg and
7' respectively. From Eqs. (1) and (2), we obtain
....„ Firs 2 sin ( a+11)^1
111 ' N = 3 sin a sin 11 tan a

. 1 i 2 1 1
3 k tan 13 tan a / •

This case is realized when 2 tan a > tan ii.

T

Fig. 155

(2) After writing the equilibrium conditions,

we obtain

IL2 ..-: 13 (

1 2 ‘

tan a tan 11 / •

This case corresponds to the condition 2 tan a <

tan 0.

(3) In this case, the rod is in equilibrium for

any value of t 3 : 2 tan a = tan 0.