Question

an object is thrown upwards with velocity u from the earth surface and attains height h so prove conservation of energy​

Answer 1

Explanation:

g=

R

2

GM

e

Applying law of conservation of mechanical energy:-

2

1

mu

2

−

R

GM

e

m

=−

R+h

GM

e

m

⟹

2

u

2

−gR=

R+h

−gR

2

⟹

R+h

gR

2

=

2

2gR−u

2

⟹R+h=

2gR−u

2

2gR

2

⟹h=

2gR−u

2

2gR

2

−R

⟹h=

2gR−u

2

u

2

R

Answer 2

Answer:

the kinetic energy of the ball is converted into potential energy and stored in the ball. therefore there is no waste of energy. hence energy is conserved

Explanation:

Hope this answer helps you.