The oscillating link OAB of a mechanism, as shown in Fig. 7.35, is pivoted at O and is moving at 90 r.p.m. anticlockwise. If OA = 150 mm ; AB = 75 mm, and AC= 250 mm, calculate 5. 15° 1. the velocity of the block C; 2. the angular velocity of the link A C; 200 mm: and 3. the rubbing velocities of the pins at 0, A and C, assuming that these pins are of equal diameters of 20 mm. [Ans. 1.2 m/s; 1.6 rad/s? clockwise; 21 200 mm/s, 782 mm/s, 160 mm/s] The dimensions of the various links of a 250 mm 75 mm B C

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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The oscillating link OAB of a mechanism,
as shown in Fig. 7.35, is pivoted at O and
is moving at 90 r.p.m. anticlockwise. If OA
= 150 mm; AB = 75 mm, and
AC= 250 mm, calculate
5.
15°
1.
the velocity of the block C;
2.
the angular velocity of the link A C;
200 mm
and
3.
the rubbing velocities of the pins at
0, A and C, assuming that these pins
are of equal diameters of 20 mm.
[Ans. 1.2 m/s; 1.6 rad/s² clockwise; 21
250 mm
75 mm
200 mm/s, 782 mm/s, 160 mm/s]
B
6.
The dimensions of the various links of a
Fig. 7.35
mechanism, as shown in Fig. 7.36, are as
follows :
AB = 30 mm ; BC = 80 mm ; CD = 45 mm ; and CE = 120 mm.
30°
75 mm
22.5 mm
E
D.
Fig. 7.36
Transcribed Image Text:The oscillating link OAB of a mechanism, as shown in Fig. 7.35, is pivoted at O and is moving at 90 r.p.m. anticlockwise. If OA = 150 mm; AB = 75 mm, and AC= 250 mm, calculate 5. 15° 1. the velocity of the block C; 2. the angular velocity of the link A C; 200 mm and 3. the rubbing velocities of the pins at 0, A and C, assuming that these pins are of equal diameters of 20 mm. [Ans. 1.2 m/s; 1.6 rad/s² clockwise; 21 250 mm 75 mm 200 mm/s, 782 mm/s, 160 mm/s] B 6. The dimensions of the various links of a Fig. 7.35 mechanism, as shown in Fig. 7.36, are as follows : AB = 30 mm ; BC = 80 mm ; CD = 45 mm ; and CE = 120 mm. 30° 75 mm 22.5 mm E D. Fig. 7.36
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