Material Behavior and Forces Concepts

What is the maximum stress that an object can withstand before failure occurs called?

• Elastic Limit

• Breaking Stress

• Density

• Efficiency

Which of the following best describes a brittle object?

• It deforms significantly before breaking.

• It shows very little strain before reaching its breaking stress.

• It returns to its original shape after deformation.

• It stores a large amount of elastic strain energy.

What is the single point through which all the mass of an object can be said to act?

• Centre of Mass

• Elastic Limit

• Equilibrium Point

• Density Center

Which law states that energy cannot be created or destroyed, only transferred into different forms?

• Conservation of Momentum

• Conservation of Energy

• Elastic Behaviour

• Efficiency

According to the conservation of momentum, what must be true about the total momentum of a system before and after an event, assuming no external forces act?

• The total momentum increases.

• The total momentum decreases.

• The total momentum remains the same.

• The total momentum becomes zero.

What is the effect of two equal and opposite parallel forces acting on an object through different lines of action?

• It causes translation only.

• It causes a rotation without translation.

• It increases the object's mass.

• It changes the object's density.

How is density defined?

• Mass per unit length

• Mass per unit area

• Mass per unit volume

• Volume per unit mass

What does efficiency measure in a system?

• The total input to total output

• The ratio of useful output to total input

• The amount of energy lost as heat

• The speed of a process

If a material returns to its original shape after deforming forces are removed, what type of behaviour does it exhibit?

• Brittle Behaviour

• Elastic Behaviour

• Plastic Behaviour

• Rigid Behaviour

In which type of collision is the total kinetic energy of the system conserved?

• Inelastic Collision

• Elastic Collision

• Plastic Collision

• Rotational Collision