Questions 23 and 24 are based on the following physical situation Ends of three light identical rods each of length / are connected to a light pivot that enables them to rotate in any direction. At the other ends of the rods, three particles A, B and C of masses m, 2m and 3m respectively are affixed. Initially, the rods are coplanar, angle between any two adjacent rod is 120° and the particles are at rest. Now the particle C is given a velocity u perpendicular to the rod connected to it and in the plane of the rods as shown in the figure. Ignore gravitational interaction between the particles. 23. Denoting acceleration vectors of the particles A, B and C by a, a and ac respectively, which of the following conclusion can you make? (a) ā +ā +āc = Ō (c) a + 2a +3āc = 0 24. What are moduli of acceleration vectors of the particles A, B and C immediately after the particle C is given velocity u? (a) All equal to 6u² 3u² 11/ 11/ (c) and (b) 3ā + 2 + c = 0 (d) None of these 2u² 111 (b) (d) 3u² 1 12u² 131 13 3u² 21 6u² and u² 1 and 4u² 131 1 BQ 120° 1 120° 120°

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Questions 23 and 24 are based on the following physical situation
Ends of three light identical rods each of length l are connected to a light
pivot that enables them to rotate in any direction. At the other ends of
the rods, three particles A, B and C of masses m, 2m and 3m respectively
are affixed. Initially, the rods are coplanar, angle between any two
adjacent rod is 120° and the particles are at rest. Now the particle C is
given a velocity u perpendicular to the rod connected to it and in the
plane of the rods as shown in the figure. Ignore gravitational interaction
between the particles.
120°
120°
120°
23. Denoting acceleration vectors of the particles A, B and C by ā, ä, and
āc respectively, which of the following conclusion can you make?
(а) ӑд + ӑз + ӑ, -ӧ
(c) ā, +2ãg +3ãc = Ō
(b) 3ã, +2ã, + äc = 0
(d) None of these
24. What are moduli of acceleration vectors of the particles A, B and C
immediately after the particle C is given velocity u?
,2
(a) All equal to
3u? 3u?
and
21
u?
(b)
би? Зи?
2u?
and
11l
12u? 6и?
and
131
4u?
(c)
11l' 111
(d)
131
131
Transcribed Image Text:Questions 23 and 24 are based on the following physical situation Ends of three light identical rods each of length l are connected to a light pivot that enables them to rotate in any direction. At the other ends of the rods, three particles A, B and C of masses m, 2m and 3m respectively are affixed. Initially, the rods are coplanar, angle between any two adjacent rod is 120° and the particles are at rest. Now the particle C is given a velocity u perpendicular to the rod connected to it and in the plane of the rods as shown in the figure. Ignore gravitational interaction between the particles. 120° 120° 120° 23. Denoting acceleration vectors of the particles A, B and C by ā, ä, and āc respectively, which of the following conclusion can you make? (а) ӑд + ӑз + ӑ, -ӧ (c) ā, +2ãg +3ãc = Ō (b) 3ã, +2ã, + äc = 0 (d) None of these 24. What are moduli of acceleration vectors of the particles A, B and C immediately after the particle C is given velocity u? ,2 (a) All equal to 3u? 3u? and 21 u? (b) би? Зи? 2u? and 11l 12u? 6и? and 131 4u? (c) 11l' 111 (d) 131 131
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