Questions 23 and 24 are based on the following physical situation Ends of three light identical rods each of length I 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) & +ẩg +ức =0 (b) 3a + 2a + c = 0 A (c) a + 2a +3āc = Ō (d) None of these o B 120° 120° 120⁰ u
Questions 23 and 24 are based on the following physical situation Ends of three light identical rods each of length I 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) & +ẩg +ức =0 (b) 3a + 2a + c = 0 A (c) a + 2a +3āc = Ō (d) None of these o B 120° 120° 120⁰ u
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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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