Question : Which of the following is an example of simple harmonic motion?
Option 1: Earth spinning on its axis.
Option 2: Simple pendulum motion.
Option 3: Ball bouncing on floor.
Option 4: Motion of a ceiling fan
Correct Answer: Simple pendulum motion.
Solution : The correct option is Simple Pendulum motion.
Simple harmonic motion is exemplified by pendulum motion. Simple harmonic motion happens when an item is subjected to a restoring force that is proportional to its displacement from a fixed point. The restoring force in the case of a simple pendulum is provided by gravity. Gravity tries to reposition a pendulum when it is moved from its equilibrium position, which is the vertical hanging position. A sinusoidal motion results from this.
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Question : The earth rotates on its axis at an inclination of
Option 1: 23 1/2 degree
Option 2: 22 1/2 degree
Option 3: 21 1/2 degree
Option 4: 20 degree
Question : Which of the following helps keep the Earth's atmosphere in place?
Option 1: The gravitational force of the moon
Option 2: Rotation of the Earth on its axis
Option 3: The gravitational force of the Earth
Option 4: The gravitational force of the Sun
Question : The moon completes ______ rotation on its axis as it completes one revolution around the Earth.
Option 1: 3
Option 2: 2
Option 3: 1
Option 4: 4
Question : The work done by the string of a simple pendulum during one complete oscillation is equal to
Option 1: The total energy of a pendulum
Option 2: Kinetic energy of the pendulum
Option 3: Potential energy of the pendulum
Option 4: Zero
Question : A system exhibiting Simple Harmonic Motion (SHM) must posses
Option 1: elasticity as well as inertia
Option 2: elasticity, inertia, and an external force
Option 3: elasticity only
Option 4: inertia only
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