Question

Q1.If we take an object to 20m. Height from the surface earth,what will be the value of potential energy of that object.​.

Answer 1

Step-by-step explanation:

Given :

• Height of the body from the ground = 20m

To Find :

• Value of potential energy of the object.

Solution :

❖ Potential energy the energy which is possessed by a body by virtue of its position.

• It is a scalar quantity having only magnitude.
• SI unit : J
• SI unit : [M¹L²T‾²]
• Value of potential energy at the reference point is taken zero..

Here potential energy of body at ground is zero.

» Potential energy of body of mass m at a height h from the ground is given by, U = m g h

where g denotes gravitational acceleration

Let mass of the body be m.

By substituting the given values;

➙ U = m g h

➙ U = m × 10 × 20

➙ U = 200 m Joule