Question

The mass of a flower pot placed at a height of 75 m is 2.5 kg and gravitational force applied of the pot is 9.8 m/s. Calculate the amount of potential energy possessed by it.​

Answer 1

Given data : The mass of a flower pot placed at a height of 75 m is 2.5 kg and gravitational force applied of the pot is 9.8 m/s².

To find : Calculate the amount of potential energy possessed by it.

Solution : A/C to given data;

• Mass of the flower pot, m = 2.5 kg
• Acceleration due to gravity/ gravitational force, g = 9.8 m/s²
• Height of the flower pot, h = 75 m

Now, we use formula of potential energy;

➜ P.E = m * g * h

➜ P.E = 2.5 * 9.8 * 75

➜ P.E = 24.5 * 75

➜ P.E = 1837.5 joule

Answer : Hence, the amount of energy possessed by flower pot is 1837.5 joule.

More info :

• Potential energy/gravitational potential energy of a body is denote by PE or U
• PE = mgh
• PE is the potential energy of the object in Joules.
• m is the mass of the object in kg
• g is the acceleration due to gravity in m/s²
• h is the height of the object with respect to the reference point in m.

Definition of potential energy : Potential energy is defined as the energy stored in an object.

There are many types of potential energies :

• Gravitational potential energy
• Elastic Potential energy,
• Electric Potential Energy etc.

Gravitational potential : The energy possessed by an object by virtue of its position relative to others.

Elastic potential energy : The energy possessed by virtue of stresses within its body.

Electric potential : the energy possessed by an object by virtue of the total charge stored within.

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Answer 2

$1837.5 \: J$

Explanation:

$Given, \: \: m = 2.5 \: kg, \: \:g = 9.8 \: m {s}^{ - 2} \\ and \: \: \: h = 75 \: m \\ we \: \: know \: \: \boxed{potential \: \: energy = mgh} \\ Now, \: \: \: putting \: \: values \\ the \: \: amount \: \: of \: \: potential \: \: energy \\ = 2.5 \: kg \times 9.8 \: m {s}^{ - 2} \times 75 \: m \\ = \boxed{ 1837.5 \: J}$