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Standard X
Physics
Theoretical Verification of Law of Conservation
Prove that th...
Question
Prove that the kinetic energy of a freely falling object on reaching the ground is nothing but the transformation of its initial potential energy.
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Solution
Top
P.E
=
mgh
K.E.
=
0
Bottom
P.E
=
0
K.E.
=
1
2
mv
2
According to the law of conversation of energy
Energy
t
o
p
=
Energy
b
o
t
t
o
m
∴
P.E.
t
o
p
=
K.E
b
o
t
t
o
m
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3
Similar questions
Q.
Write detailed answers?
a.
Explain the difference between potential energy and kinetic energy.
b.
Derive the formula for the kinetic energy of an object of mass m, moving with velocity v.
c.
Prove that the kinetic energy of a freely falling object on reaching the ground is nothing but the transformation of its initial potential energy.
d.
Determine the amount of work done when an object is displaced at an angle of 30
o
with respect to the direction of the applied force.
e.
If an object has 0 momentum, does it have kinetic energy? Explain your answer.
f.
Why is the work done on an object moving with uniform circular motion zero?
Q.
A freely falling object eventually stops on reaching ground. What happens to its potential and kinetic energy while falling?
Q.
A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?
Q.
Question 21
A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?
Q.
State whether the given statement is True or False :
A freely falling object eventually stops on reaching the ground. A part of the kinetic energy on reaching the ground changes into heat energy.
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