A student is playing with a pendulum. He gives the ball a push and watches the ball as it swings. After a while, the ball stops
1 answer:
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Answer : <u><em>Gravitational potential energy</em></u>
Explanation :
Gravitational potential is defined as the work done in moving an object from a fixed reference location to the location of object. This arises from the law of gravity and it acts against the gravity.
Mathematically, it is defined as potential energy (U) per unit mass (m).
i.e.
The general form of Gravitational energy is
where, is gravitational constant
and
are masses of interacting bodies
and is the distance between them.
Negative sign shows here that the system is bound.
Answer:
Explanation:
From the question we are told that
Height of unknown liquid
Height of glycerin
Generally at equal levels of liquid pressure
Therefore
Therefore
The Density of the unknown liquid is given by