Question

PLEASE HELP! PLEASE make sure you should all steps and have the correct answer!! This is 3 rigid bodies connected!

un frn slender rod of mass 2 kg ard rengtt e rigat a rce is be 3 88 hooWed togethar 7So 6- Far bots tte disk ak Tre stider he Link AB and disk BG

Answer 1

Given that {mu_s = 0.6 mu + k = 0.5} for slider and disk 'c' (alpha of AB and BC) Since joint 'B' apply a force to disk by which it is moving motion of Disc. The disk rolls on the surface by a force (F) and force (F) also gives torque. (F_1 cos 60 degree) gives no torque but (F sin 60 degree) gives a torque but a friction also acts to the disc in forward direction because (F sin 60 degree) provides maximum torque to body now 'f_r' must cancel same torque of it. \r\n F_1 sin 60 + f_r = m a (F_1 sin 60 - f_r) R = m R^2/2 alpha (F_1 sin 60 - f_r) = m R alpha/2 F_1 sin 60 + f_r = m a F_1 sin 60 - f_r = m R alpha/2 2 F_1 sin 60 = m a + m R alpha/2 2 F_1 sin 60 = m {a + R alpha/2} Disc rolls now a = R alpha also classify 2 F_1 sin 60 = m {R alpha + R alpha/2} 2 F_1 sin 60 = m {3 alpha R/2} 4 F_1 sin 60/3 m R = alpha ('alpha' of disc)