TUTORIAL 1-BASIC CONCEPTS OF EM

 According to which of the following laws of mechanics a body remains/continue in its state of rest or motion until it is disturbed by an external agent?

• Newton’s first law of motion
  
  

• Newton’s second law of motion
  
  

• Newton’s third law of motion
  
  

• Superposition law
  
  

Which of the following is the basic law for mechanics?

• Newton’s law of viscosity
  
  

• Parallelogram law
  
  

• Newton’s laws of motion
  
  

• Hooke’s law
  
  

Which of the following is a branch of mechanics?

• Statics and kinetics

• Statics and dynamics
  
  

• Kinematics and dynamics
  
  

• Kinetics and kinematics
  
  

What is Mechanics?

• Branch of science which deals with failure analysis
  
  

• Branch of science which deals with conditions of rest or motion of bodies
  
  

• Branch of science which deals with the study of bodies only under rest
  
  

• Branch of science which deals with the study of bodies only under motion
  
  

What is Engineering Mechanics?

• Study of bodies under motion without considering forces
  
  

• Application of mechanics to issues involving common engineering aspects
  
  

• Study of bodies only under rest
  
  

• Study of bodies only under motion
  
  

Which is the branch of physics that deals with the motion of a body by considering the cause?

• 1. Statics

• 1. Thermodynamics

• 1. Dynamics

• 1. Astronomy

Passengers are pushed back when a bus starts abruptly. Which of the following is an example of this?

• The first law of Newton
  
  

• The second law of Newton
  
  

• The third law of Newton
  
  

• None of Newton’s laws apply to you.

There is an opposite and equal reaction to every action. This situation is described by:

• the first law of motion
  
  

• second law of motion

• law of inertia
  
  

• third law of motion

Which of the following statements is false?

• Scalar quantities have size or magnitude only

• Vector quantities have both magnitude and direction

• Mass, length and time are all scalar quantities

• Distance, velocity and acceleration are all vector quantities

The weight of a body is due to

• Centripetal force of earth

• Gravitational force of attraction towards the centre of the earth

• Forces experienced by body in atmosphere

• Force of attraction experienced by particles