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

Solutions 117 1.11. Let us suppose that hail falls along the vertical at a velocity v. In the reference frame fixed to the motor ...

118 Aptitude Test Problems in Physics dicular to two intersecting straight lines AC and BC, which is impossible. Consequently, i ...

Solutions 119 wards relative to the middle of the car). Obviously, a driving out is a driving in inversed in time. Therefore, th ...

(^120) Aptitude Test Problems in Physics upward direction is then a. Vag ± va — — )2 a V109 r 3 1.15. Let tne velocity of the dr ...

Solutions 121 in contact with the bobbin all the time, the velocity of point C relative to the board is di- rected along the boa ...

(^122) Aptitude Test Problems in Physics 1.18. Let the initial winding radius be 4r. Then the decrease in the winding area as a ...

Solutions (^123) wedge. The velocity of the load' relative to the ground is vi = Vrel owed, i.e. (Fig. 133) 2uwed sin 4_=,( 2a s ...

Fig. 134 124 Aptitude Test Problems in Physics on 1 for the path between points A and B. The graph is a segment of a straight li ...

......`\ % / (^) B 1 i s i p i I % I 1 1 / 1 A r —,. -/ — — . 13 1 1 e 8 '''',... ...7" ......_ _...." CI ,,___.... C Fig. 135 \ ...

126 Aptitude Test Problems in Physics (OA = R) such that points 0, S, A, and J lie on the same straight line. Then it is clear t ...

Solutions (^127) Since sin cc = VI. — toss a = V1 — (d/2R) 2 , the velocity of the upper point of "intersection" of the hoops is ...

(^128) Aptitude Test Problems in Physics From the condition of inextensibility of the rod B 2 A 2 , it follows that , 7t V 17. 2 ...

I Solutions 129 Solving the obtained equations, we find that the velocity v 0 is vR 110= R sin a—r It can be seen that for R sin ...

130 Aptitude Test Problems in Physics 1.28. In order to describe the motion of the block, we choose a reference frame fixed to t ...

Solutions 131 of conservation of mechanical energy). The fre- quency of the corresponding vibratory motion can be found from the ...

132 Aptitude Test Problems in Physics where 2cooi/TV2g) In the second case (after the jerk), the motion can be regarded as if th ...

Solutions 133 using the formula x (t) = x 1 sin coot. For this purpose, we determine t 2 from the formula xo = x1 sin 0 02. Sinc ...

(^134) Aptitude Test Problems in Physics equal to T 2 ) to the minimum tension (mg) is ob- viously the same as in the former cas ...

Fig. 144 Solutions 135 vector BC equal to yector AB is the change in ve- locity during the next time interval At. Therefore, in ...

136 Aptitude Test Problems in Physics load (and the carriage) is determined by this horizontal force: ma=mglia 2 — 1. Consequent ...