Engineering Mechanics

(^348) „„„„„ A Textbook of Engineering Mechanics Let y = Virtual upward displacement of the beam at C. From the geometry of the ...

Chapter 16 : Virtual Work „„„„„ 349 First of all, let us assume the beam to be hinged at A. Now consider an upward virtual displ ...

(^350) „„„„„ A Textbook of Engineering Mechanics From the geometry of the figure, we find that when the virtual upward displacem ...

Chapter 16 : Virtual Work „„„„„ 351 From the geometry of the figure, we find that when the virtual upward displacement of the be ...

(^352) „„„„„ A Textbook of Engineering Mechanics A simply supported beam of span 4 m is carrying a uniformly distributed load o ...

Chapter 16 : Virtual Work „„„„„ 353 Solution. Given : Weight of the ladder (W) = 250 N and inclination of the ladder with the ho ...

(^354) „„„„„ A Textbook of Engineering Mechanics Solution. Given: Length of the ladder (l) = 5 m and weight of the ladder (W) = ...

Chapter 16 : Virtual Work „„„„„ 355 Solution. Given : Weight (W) = 5 kN Let P= Force which can hold the weight in equilibrium, a ...

(^356) „„„„„ A Textbook of Engineering Mechanics ∴ Virtual work done by the effort (P) = + P × y ...(i) ...(Plus sign due to upw ...

Chapter 16 : Virtual Work „„„„„ 357 16.10.APPLICATION OF PRINCIPLE OF VIRTUAL WORK ON FRAMED STRUCTURES In a framed structure, f ...

(^358) „„„„„ A Textbook of Engineering Mechanics Example 16.12. A square pin-jointed frame ABCD with 500 mm side is subjected to ...

Chapter 16 : Virtual Work „„„„„ 359 EXERCISE 16.2 The diameter of the pulleys in a differential pulley block are 300 mm and 250 ...

(^360) „„„„„ A Textbook of Engineering Mechanics A structure, with pin-jointed member is shown in Fig. 16.26. Fig. 16.26. Dete ...

Chapter 17 : Linear Motion „„„„„ 361 361 Linear Motion Contents Introduction. Important Terms. Motion Under Constant Accelerati ...

(^362) „„„„„ A Textbook of Engineering Mechanics Velocity. The velocity of a body may be defined as its rate of change of displ ...

Chapter 17 : Linear Motion „„„„„ 363 Substituting the value of v from equation (i), (^12) 22 uuat stutat ⎛⎞++ =×=+⎜⎟ ⎝⎠ ...(iii) ...

(^364) „„„„„ A Textbook of Engineering Mechanics (i) Retardation Let a= Acceleration of the motorist. We know that v^2 =u^2 + 2a ...

Chapter 17 : Linear Motion „„„„„ 365 Example 17.6. A burglar’s car had a start with an acceleration of 2 m/s^2. A police vigilan ...

(^366) „„„„„ A Textbook of Engineering Mechanics Time taken for each of the two intervals of one kilometre Let t 1 = Time taken ...

Chapter 17 : Linear Motion „„„„„ 367 and total distance travelled by the Train B, sB= 500 + 20 (T – 50) m ...(ii) For the train ...