Which of the following is an example of simple harmonic motion
1 answer:
Simple harmonic motion is to and fro motion of object in straight line with small amplitude.
here the force on object must be proportional to displacement from mean position
A) Motion of simple pendulum
Yes it is a simple harmonic motion as it moves to and fro.
B)The motion of ceiling fan
It is not to and fro motion but it is circular motion
C) The spinning of earth on its axis
It is again circular motion on its own axis
D) A bouncing ball on a floor.
It is to and fro motion but it does not follow F = - Kx because here force F = mg
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Answer:
the weight of the object decreases when it is taken from the Earth to the Moon
Explanation:
The weight of an object is defined as the product of the mass of the object with the acceleration due to gravity of the Planet.
where,
W = weight of the object
m = mass of the object
g = acceleration due to gravity on the planet
The mass of an object remains constant everywhere in the universe. Therefore, the weight is directly proportional to the value of acceleration due to gravity.
The value of acceleration due to gravity on the Moon is lesser than its value on the Earth.
<u>Hence, the weight of the object decreases when it is taken from the Earth to the Moon </u>
The total energy (also called mechanical energy) is the sum of the kinetic energy and potential energy:
For this pendulum, we see that at t=0.60 s the total energy is TE=0.918 J while the potential energy is 0.054 J, so the kinetic energy (the missing value in the table) is
For this pendulum, we see that at t=0.60 s the total energy is TE=0.918 J while the potential energy is 0.054 J, so the kinetic energy (the missing value in the table) is