Question

Classify each of the following items as a rigid body, a system of rigid bodies, or a nonrigid body:
a. a fishing pole,
b. a diving board,
c. a mechanical spring,
d. a bowling ball,
e. a baseball bat,
f. a system of gears,
g. a slider block system, and
h. a construction excavator's arm.

Answer 1

Answer:

Rigid bodies: Options d and e

Rigid bodies' system: options f, g and h

Non-rigid bodies: Options a, b and c

Explanation:

The above classification of the mentioned objects into rigid bodies, non rigid bodies and system of rigid bodies can be explained as :

Rigid body: A body which does not undergo any change in its form or shape on application of externally applied load or force is said to be a rigid body.

System of Rigid bodies:

A system of rigid bodies is different from any other element system as in this the bodies constituting the system must be rigid bodies.

Non-rigid bodies:

A body which undergoes a change in its form or shape on application of externally applied force or load is said to be a non-rigid body.

Answer 2

The groups which are rigid body are:

• A bowling ball
• A bowling ball

The group which system of rigid bodies:

• A system of gears
• A slider block system
• A construction excavator's arm

The group which are system of non rigid bodies are:

• A fishing pole
• A diving board
• A mechanical spring

What is a rigid body?

A rigid body can be defined as state or condition whereby a body does not change shape. In order words, the distance between the two points on the body does not change when a body is being subjected to by an external force

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