What kind of motion does the pendulum of a wall-clock exhibit?

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Rotatory motion

Circular motion

Linear motion

Oscillatory motion

answer is D.

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Detailed Solution

Concept: A wall clock's pendulum is hanging from a fixed location. As the second progresses, it moves sideways from its equilibrium position.
Motion is defined as the change in location of an item over time. Some items move in a straight line, such as a laser beam, while others move in circular patterns, such as a Ferris wheel. There are four primary forms of motion in mechanics: rotatory, linear, and oscillatory motion. The remainder are just combinations and variants of these fundamental categories.
When an item spins in a circular orbit around a single axis of rotation, it is said to be in rotatory motion. The motion of a car's wheels on the road, for example, is a sort of circular motion.
When an item moves in a straight path, it is said to be in linear motion. It is sometimes referred to as rectilinear motion. An aeroplane taking off in a straight path on the runway is an example.
Oscillatory motion is a sort of movement. In this case, an item has an equilibrium position that it maintains even while at rest. When an item is moved by an external force, it begins to move to and fro along the mean position. The pendulum is the most popular and well-known example of this.
Hence, option 4 is the correct answer.

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