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

Solutions 177 admissible values of s lies between 0 and (3-1/ 5 )12, whence < V 3— k 2 m • 1.77. The change in the kinetic en ...

178 Aptitude Test Problems in Physics be zero (see Fig. 41). The initial velocity of the block relative to the ground is determi ...

Solutions (^179) The total distance traversed by the block rela- tive to the conveyer belt is , 21 , v 2 _ (v-I-Jr2tter s s 2 = ...

180 Aptitude Test Problems in Physics 1.81. Since the system is closed, the stars will rotate about their common centre of mass ...

Solutions 181 We shall write the momentum conservation law in projections on the x- and y-axes (Fig. 179): 10mv 1 = 11.mv2s,^ (1 ...

182 Aptitude Test Problems in Physics the velocity v of the station immediately after the collision through the relation VR 2 =v ...

Solutions 183 Here mN , mE, coN, WE, RN, and RE are the masses, angular velocities, and orbital radii of Nep- tune and the Earth ...

184 Aptitude Test Problems in Physics From these relations, we can determine the angles corresponding to the equilibrium positio ...

Solutions 185 friction is //sin a + I sin a, and the equilibrium condition will be written in the form 1 1+ sin 2 a sin a +sin a ...

186 Aptitude Test Problems in Physics 1/(2 tan a + cot a) is 1/(2172) = 172/4 and is at- tained at z 2 = tan a = 1/2/2. Thus, th ...

Solutions 187 Thus, the minimum force Fmk' for which the middle rod retains its horizontal position is Foil,. mg sin a = 2 mg an ...

188 Aptitude Test Problems in Physics case, AB = 21 cos 30° tan a, where 2/ is the side of a hexagonal cross section of the penc ...

Solutions (^189) the equilibrium can be only neutral, i.e. the cen- tre of mass of the rod must be on the same level for any pos ...

193 Aptitude Test Problems in Physics and the sought solution is T 1 - 1 — arccos - 13 — T a • Fig. 185 1.91•. Let the ball of m ...

Solutions (^191) the time interval x can be obtained from the re- lation AP Fm =—=mg. By hypothesis, the mass M of the pan of th ...

(^192) Aptitude Tesi; Problems in Physics where Fel is the elastic force of the spring, that their accelerations at each instant ...

Solutions^193 1.95. The period of oscillations of the pendulum in the direction perpendicular to the rails is T 1 = 231/ T - 7 g ...

194 Aptitude Test Problems in Physics spring is F2 = 2Ften sin a (see. Fig. 48). Accord.. ing to Hooke's law, F2 = (1.51 — 21 si ...

Solutions (^195) of rotation of the hoop about its centre of mass. Since the velocity of point A of the hoop is always equal to ...

length of the thread 17/ 2 ±(L/2) 2 and the free-fall acceleration L/2 = g I /1 2 + (L/2) 2 (^196) Aptitude Test Problems in Phy ...