Question

an object of mass 10kg moving on top of a building raised to a height of 15m . find the potential energy and the total energy of the object​

Answer 1

Answer:

Taking g=9.8 m/sec2

Potential energy = 1470 J

Total energy = 1470 J

Explanation:

At the height of 15m the object will be at rest

So Kinetic energy =0

Potential energy = mgh, where m= mass

g = acceleration due to gravity

h = height

Given,

m= 10 kg

g= 9.8 m/sec2

h= 15 m

mgh= 10*9.8*15

=> 1470 J

Total energy = potential energy + kinetic energy

= 1470 J + 0 J

= 1470 J

I hope this explanation will help you.

Answer 2

Answer:

• Potential energy = 1470 J
• Total energy = 1470 J

Explanation:

Given

• Mass (m) = 10 Kg
• Height (h) = 15 m

To find

• Potential energy (P.E)

Solution

↝ P.E = mgh

Where :-

• m - mass
• g - acceleration due to gravity (9.8 m/s²)
• h - height

Substituting we get :-

• 10 × 9.8 × 15
• 98 × 15
• 1470

Hence, the potential energy of the body is 1470 J.

↝ Total energy = P.E + Kinetic energy

• 1470 + 0
• 1470 J

Hence, the total energy of the body is 1470 J since there is no kinetic energy acting on the body.