Download SGBAU B-Tech 2nd Sem Chemical Engineering Engineering Mechanics II Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 2nd Sem Chemical Engineering Engineering Mechanics II Previous Question Paper

B.E./ B.Tech. (Chemical Engineering) / B.Text. Second Semester (Old Course)
Engineering Mechanics ? II : 2 S 5
AW - 3542 l . P.T.O
200N for block C. The co-e?icicnt of friction between the surface & block A is 0.20 and
between the surface and block B is 0.25. Assume pully as frictionless. Calculate the
acceleration of each block.
A B
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Fit (2)
P. Pages :2 llllllllmllll AW - 3542
Time 2 TWO HOLES . o 2 e 9 i Max. Marks 2 40
Notes : 1 All question carry equal marks.
2. Answer three question.
3. Due credit will be given to neatness and adequate dimensions.
4 Assume suitable data wherever necessary.
5. Illustrate your answer necessary with the help of neat sketches.
6. Use of pen Blue/Black ink/re?ll only for writing the answer book.
1 a) A stone is projected vertically upward with velocity of 30m/s, a?er 2 seconds another stone 6
is projected vertically upward with a velocity of 22m/s. At what position above the ground
both the stone vn'll meet? ,
b) A wheel rotating about a ?xed axis at 20 r.p.m is uniformly accelerated for 70 seconds 7
during which time it makes 50 revolutions. Find the angular velocity at the end of this
interval.
2. a) Explain motion curves. 4
b) The rectilinear motion of a particle is de?ned by S = %t3 ? 36t . Determine the acceleration 9
when panicle reverses its direction.
3. a) What is Dynamic Equilibrium. 3
b) What is the equations ofkinctics in translation & rotation. 6
c) Determine the force P that will give the block shown in Fig. (1) an acceleration of 5
0.2g m/s2 . consider co-ef?cient of kinetic friction as 0.20.
P
/
SOON 4
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Fia (l)
4. The Weights ofthree blocks shown in Fig. (2) are lOON for block A, 200N for block B and 14

5. a) Derive Work-Encrgy eq uation in translation.
b) The pulley shown in ?g. (3) is frictionless and of negligible weight. Find the velocity of
block B a?er it has moved 3m from rest. Use this result to determine the acceleration for
block A. Use Work-Energy method only.
B
mm |450N|
6. a) Derive lmpulse-Momemum equation.
b) A system shown in ?g. (4) is moving rightward m'th a velocity of 15 m/s when a constant
horizon tal force I? is applied as shown in ?g. (4). Determine the value of P that will give the
system a leftward velocin of 30 m's in :1 time interval of 10 seconds.
P *? BOON
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Fig, (4) 4 k
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AW - 3542
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