Engineering Mechanics

(^448) „„„„„ A Textbook of Engineering Mechanics (b) No. of revolutions made by the wheel in 30 seconds We also know that total ...

Chapter 21 : Motion of Rotation „„„„„ 449 Time in which the pulley will come to rest Let t 2 = Time in which the pulley will com ...

(^450) „„„„„ A Textbook of Engineering Mechanics We know that final velocity of the shaft (ω), 36 π= ω 0 + αt 1 = 20 π + (α × 4) ...

Chapter 21 : Motion of Rotation „„„„„ 451 Now consider the motion of the bridge in the next 60 sec. In this case, constant angul ...

(^452) „„„„„ A Textbook of Engineering Mechanics Substituting this value of α in equation (i), 0 0 –40 600 10 – 50 7.5 ⎛⎞ωπ π= ω ...

Chapter 21 : Motion of Rotation „„„„„ 453 21.5. LINEAR (OR TANGENTIAL) VELOCITY OF A ROTATING BODY Consider a body rotating abou ...

(^454) „„„„„ A Textbook of Engineering Mechanics Example 21.11. A car is moving at 72 k.m.p.h., If the wheels are 75 cm diameter ...

Chapter 21 : Motion of Rotation „„„„„ 455 Solution. Given : Equation for angular displacement θ = 2t^3 + 0.5 ...(i) Angular disp ...

(^456) „„„„„ A Textbook of Engineering Mechanics (iii) Maximum angular velocity of the particle The maximum angular velocity of ...

Chapter 22 : Combined Motion of Rotation and Translation „„„„„ 457 457 Contents Introduction. Motion of a Rigid Link. Instantan ...

(^458) „„„„„ A Textbook of Engineering Mechanics 22.2.MOTION OF A RIGID LINK Consider a rigid link AB, which moves from its init ...

Chapter 22 : Combined Motion of Rotation and Translation „„„„„ 459 First of all, draw the initial and final positions of the ri ...

(^460) „„„„„ A Textbook of Engineering Mechanics Example 22.2. Three links are hinged together to form a triangle ABC as shown i ...

Chapter 22 : Combined Motion of Rotation and Translation „„„„„ 461 Piston, connecting rod and crank. In a four-bar mechanism AB ...

(^462) „„„„„ A Textbook of Engineering Mechanics 22.6.GRAPHICAL METHOD FOR THE VELOCITY OF PISTON OF A RECIPROCATING PUMP Consid ...

Chapter 22 : Combined Motion of Rotation and Translation „„„„„ 463 Example 22.3. In a reciprocating pump, the lengths of connect ...

(^464) „„„„„ A Textbook of Engineering Mechanics Measuring the diagram to scale, we find OB = 1.45 m and OC = 1.1 m We know tha ...

Chapter 22 : Combined Motion of Rotation and Translation „„„„„ 465 We also know that velocity of B, vB=ω 1 × AB ...(iii) Dividin ...

(^466) „„„„„ A Textbook of Engineering Mechanics 22.8.VELOCITY DIAGRAM METHOD FOR THE VELOCITY OF PISTON OF A RECIPROCATING PUMP ...

Chapter 22 : Combined Motion of Rotation and Translation „„„„„ 467 First of all, draw the space diagram for the reciprocating pu ...