Rigid Body Motion and Mass Distribution Quiz
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Questions and Answers

Elastic deformation is the property of a body to regain its original shape and size after the applied force is removed.

True

Rigid bodies are perfectly solid and do not deform under external forces.

False

Knowledge of elastic properties of materials like steel and concrete is not important in engineering design.

False

Putty and mud exhibit elastic deformation and tend to regain their original shape after deformation.

<p>False</p> Signup and view all the answers

Rigid bodies are always perfectly solid and do not deform under external forces.

<p>False</p> Signup and view all the answers

Elastic deformation is the property of a body to permanently deform when a force is applied.

<p>False</p> Signup and view all the answers

Plasticity is the property of a material to regain its original shape after the applied force is removed.

<p>False</p> Signup and view all the answers

A helical spring exhibits elastic deformation when stretched and regains its original shape when the force is removed.

<p>True</p> Signup and view all the answers

Steel bars can be deformed if a sufficiently large external force is applied.

<p>True</p> Signup and view all the answers

The study of elastic properties of materials like steel and concrete is important in engineering design.

<p>True</p> Signup and view all the answers

Materials like putty and mud exhibit elastic deformation and tend to regain their original shape after deformation.

<p>False</p> Signup and view all the answers

A body's motion depends on how mass is distributed within the body.

<p>True</p> Signup and view all the answers

Elastic deformation is the property of a body to regain its original shape and size after the applied force is removed.

<p>True</p> Signup and view all the answers

Solid bodies are always perfectly rigid and do not deform under external forces.

<p>False</p> Signup and view all the answers

Even the appreciably rigid steel bar can be deformed when a sufficiently large external force is applied on it. This means that solid bodies are not perfectly ________.

<p>rigid</p> Signup and view all the answers

A solid has definite shape and size. In order to change (or deform) the shape or size of a body, a ________ is required.

<p>force</p> Signup and view all the answers

The property of a body, by virtue of which it tends to regain its original size and shape when the applied force is removed, is known as ________ and the deformation caused is known as elastic deformation.

<p>elasticity</p> Signup and view all the answers

However, if you apply force to a lump of putty or mud, they have no gross tendency to regain their previous shape, and they get permanently ________.

<p>deformed</p> Signup and view all the answers

Such substances are called plastic and this property is called ________.

<p>plasticity</p> Signup and view all the answers

The elastic behaviour of materials plays an important role in ________ design.

<p>engineering</p> Signup and view all the answers

Example of elastic deformation: If you stretch a helical spring by gently pulling its ends, the length of the spring increases slightly. When you leave the ends of the spring, it regains its original size and ________.

<p>shape</p> Signup and view all the answers

The ________ of a body depends on how mass is distributed within the body.

<p>motion</p> Signup and view all the answers

Rigid bodies generally means a hard solid object having a definite shape and ________.

<p>size</p> Signup and view all the answers

A rigid body generally means a hard solid object having a definite shape and ________.

<p>size</p> Signup and view all the answers

What is the property of a body to regain its original size and shape when the applied force is removed known as?

<p>Elasticity</p> Signup and view all the answers

Which term describes the deformation caused when a body tends to regain its original size and shape after the applied force is removed?

<p>Elastic deformation</p> Signup and view all the answers

What is the property called when a material gets permanently deformed and does not tend to regain its previous shape?

<p>Plasticity</p> Signup and view all the answers

What does the term 'rigid body' generally mean?

<p>A hard solid object having a definite shape and size</p> Signup and view all the answers

What happens to the length of a helical spring when it is stretched and then the force is removed?

<p>It regains its original size</p> Signup and view all the answers

What property is exhibited by putty and mud when force is applied, causing them to get permanently deformed?

<p>Plasticity</p> Signup and view all the answers

What plays an important role in engineering design due to its elastic behavior?

<p>Elastic properties of materials</p> Signup and view all the answers

What is required in order to change the shape or size of a body?

<p>A force</p> Signup and view all the answers

What is the property of a body to regain its original size and shape when the applied force is removed known as?

<p>Elasticity</p> Signup and view all the answers

What does the term 'rigid body' generally mean?

<p>A hard solid object having a definite shape and size</p> Signup and view all the answers

Match the following properties of materials with their descriptions:

<p>Elasticity = Tends to regain its original size and shape when the applied force is removed Plasticity = Gets permanently deformed when force is applied and does not tend to regain its previous shape Rigid body = Hard solid object having a definite shape and size Deformation = Change in shape or size of a body due to applied force</p> Signup and view all the answers

Match the following materials with their exhibited properties:

<p>Steel = Exhibits elastic behavior and tends to regain its original size and shape after deformation Putty = Gets permanently deformed when force is applied and does not tend to regain its previous shape Helical spring = Tends to regain its original size and shape when the applied force is removed Mud = Gets permanently deformed when force is applied and does not tend to regain its previous shape</p> Signup and view all the answers

Match the following terms related to material behavior with their definitions:

<p>Rigid body = A hard solid object having a definite shape and size Elastic deformation = Deformation of a material that tends to regain its original size and shape after the applied force is removed Plasticity = Property of a material to get permanently deformed and not tend to regain its previous shape when force is applied Deformation = Change in shape or size of a body due to applied force</p> Signup and view all the answers

Match the following statements about material behavior with their accurate descriptions:

<p>Solid bodies = Not perfectly rigid and can be deformed when a sufficiently large external force is applied Elastic behavior = Plays an important role in engineering design, such as in the design of buildings Plastic substances = Get permanently deformed when force is applied and do not tend to regain their previous shape Elastic deformation = Property of a material to tend to regain its original size and shape after the applied force is removed</p> Signup and view all the answers

Match the following material properties with their corresponding examples:

<p>Elasticity = Property exhibited by a helical spring when it regains its original size and shape after the applied force is removed Plasticity = Exhibited by putty and mud when they get permanently deformed and do not tend to regain their previous shape Rigid body = Describes a hard solid object having a definite shape and size Deformation = Change in shape or size of a body due to applied force</p> Signup and view all the answers

Define the term 'elasticity' and provide an example of a material that exhibits elastic deformation.

<p>Elasticity is the property of a body to regain its original size and shape when the applied force is removed. An example of a material exhibiting elastic deformation is a helical spring that regains its original shape after being stretched.</p> Signup and view all the answers

Explain the concept of 'plasticity' and give an example of a material that demonstrates plastic behavior.

<p>Plasticity is the property of a material to get permanently deformed when force is applied and not tend to regain its previous shape. An example of a material exhibiting plastic behavior is putty or mud, which do not regain their original shape after being deformed.</p> Signup and view all the answers

What is the significance of understanding the elastic properties of materials like steel and concrete in engineering design?

<p>Understanding the elastic properties of materials is important in engineering design as it helps in predicting how materials will behave under different forces and loads, ensuring the structural integrity and safety of designs.</p> Signup and view all the answers

Why are solid bodies not perfectly rigid, and what property allows them to regain their original shape and size after deformation?

<p>Solid bodies are not perfectly rigid because they can be deformed under sufficiently large external forces. The property that allows them to regain their original shape and size after deformation is elasticity.</p> Signup and view all the answers

Describe the behavior of a helical spring when it is stretched and then the force is removed.

<p>When a helical spring is stretched and then the force is removed, it regains its original size and shape, exhibiting elastic deformation.</p> Signup and view all the answers

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