Mechanics

Mechanics

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New and Used Books on Mechanics

Problems and Solutions in Introductory Mechanics  Problems and Solutions on Mechanics  Mechanics  Mechanics  Fluid Mechanics: Problems and Solutions  Problems and Solutions in Quantum Mechanics  Problems in Quantum Mechanics: With Solutions

 Statistical Mechanics: An Advanced Course with Problems and Solutions   Mechanics Made Easy: How to Solve Mechanics Problems   Mechanics of Materials 4th Ed: Solutions Manual   Physics by Example: 200 Problems and Solutions   A Brief Introduction to Fluid Mechanics, Student Solutions Manual   All About Mechanical Engineering: Physical Science (Science Readers)   Advanced Mechanics of Materials

 Mechanical Engineering Problems and Solutions, 6th ed (Engineering Press at OUP)   Materials Science and Engineering   Continuum Mechanics for Engineers   Mechanical Engineering Science: Textbook   Thermodynamics: An Engineering Approach (Mcgraw-Hill Series in Mechanical Engineering)   Mechanical Engineering

 An Introduction to Mechanical Engineering   Engineering Materials Science   Higher Engineering Science   Mechanical Engineering for Professional Engineers' Examinations
 

 

Electronic Books on Mechanics

Mechanics Mechanics Mechanics Mechanics Mechanics Problems and Solutions in Quantum Mechanics Problems and Solutions in Nonrelativistic Quantum Mechanics Problems in Quantum Mechanics

 Problems and Solutions on Thermodynamics and Statistical Mechanics  Solved Problems in Classical Mechanics  Problems & Solutions to Mechanical Engineering  Solved Practical Problems in Fluid Mechanics  Solid Mechanics  Engineering Mechanics

 Engineering Mechanics  Thermodynamics and Statistical Mechanics  Engineering Mechanics and Design Applications  Mechanical Engineering Science  Mechanical Science  Engineering Science  Material Science and Engineering
 


Examples
 and Solutions

Linear Motion: A car travels at a uniform velocity of 20 m/s for 5s. The brakes are then applied and the car comes to rest with uniform retardation in a further 8s. How far does the car travel after the brakes are applied?

Initial Velocity = u = 20 m/s
Time traveled after brakes = t = 8s
Distance traveled after brakes = s

  
Applying  v = u + at  (where a is the retardation)  
                    0 = 20 + 8a
                     8a = -20
                       a = -20/8
                          = -2.5 m/s2 
(note the minus sign for retardation)
      Applying   s = ut + at2  (for the distance traveled after braking)                       s = (20)(8) + (-2.5)(8)2
                            = 160 - (64)(5)/4
                              = 160 - 80
                               
 = 80 m 

Linear Motion: A motorist, traveling at 90 km/h, applies his brakes and comes to rest with uniform retardation in 20s. Calculate the retardation in m/s2 

   Initial Velocity = u = 90 km/h = (90 X 1000)/3600 m/s = 25
                 Final Velocity = v = 0
                    Time taken = t = 20s
                      Retardation = a
                         
 Applying   v = u + at
                                        0 = 25 + 20a
                                   - 20a = 25
                                         a = -25/20
                                            
= -1.25 m/s2

 

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