Common Acceleration of Objects - Physics for Scientist and Engineers - Solved Past Paper, Exams of Engineering Physics

Download Common Acceleration of Objects - Physics for Scientist and Engineers - Solved Past Paper and more Exams Engineering Physics in PDF only on Docsity! 1. (20 points) Two objects of masses m, = 1.65 kg and mg = 3.22 kg attached by a massless rod parallel to the incline on which both slide travel down the plane with m; trailing ma, The angle of the incline is 6 = 29,5°. The coefficient of friction between m, and the incline is 41 = 0.226; between m; and the incline the corresponding coefficient is ba = 0.127. QO {a) Compute the common acceleration of the two objects. (b) Determine the tension in the rod. (c} What are the answers to (a) and (b) if my trails m,? (a) m, mg om & tT — MGI cos & nya in, mn, gen -T ~My mg essk = wa > 7, 5 f . 1 tri) > (m, + m, ) game LAM “hae | Ge sb Cat, 4 ui ' i, >| 2 a2 US ne hes | B.456 m/s | ‘ ee i tan bj = ; > { &. if eo () Ts mosh ~ my teat PL a = My, (gsm - 4, g oe. “) 0-42. My («¢) ™, : mm, gain -T _ AY my q coy - WY vy, a, gen a Ay gent = & = ty na 7 . > (mH 4m,) gin ~ (gm + pe) genG 2 ON Te => | Same a and T] T “ee he. t Ye direction 2. (20 points) A small block of mass m is placed inside an inverted cone that is rotating about a vertical axis such that the time period for one revolution is P. The walls of the cone make an angle 8 with the vertical. The coefficient of static friction between the block and the cone is ps. If the block is to remain at a constant height h above the point of the cone, what are the maximum and minimum values of P? y R= h tan 6 cD y r jort before it slips, Pop, A 2 x X- Component: Foe aes Neos 9- Fsin@ total Agtance . 2T R Ve latel tyme P m( suf)” = Noos @ ~ Ks 806 a ale R ae . HT? (4 tan 8) = wv (cas d- A 56) p* iad yn Component : Mend 4 Fesd -m4g = 0 fv (8108 + As cos @) = m4 =? N= ed Sind ts sd > Antmb 6 = m9 ) (cers -vs8) “pe tan 3:20 ts ord meer ) Panay > AT fiboa? | T= Ps tan? 4 = 9° : Yath S00 tA sO => Rene tar) tLe tang as 8-4, 5:08 Pain = aT 9 epiend|