Theory of Machine
The maximum or minimum value of the swaying couple is

± (a/√2) (1 - c) m.ω².r
± a (1 - c) m.ω².r
± c.m.ω².r
± 2a (1 - c) m.ω².r

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r₁ and r₂ = External and internal radii of collar respectively)

(2/3) μ W [(r₁³ - r₂³)/(r₁² - r₂²)]
(1/2) μ W [(r₁³ - r₂³)/(r₁² - r₂²)]
(2/3) μ W (r₁ + r₂)
(1/2) μ W (r₁ + r₂)

ANSWER DOWNLOAD EXAMIANS APP