1
15. Prove with the help of dimensional analysis that the equation h = gt for the distance travelled by
2
a body falling freely under gravity in time t is incorrect. Find the correct equation with the help of
1
dimensions.
Ans. h =
8
2
Answers
Answered by
1
Answer:
Now if R decrease
r
mV
new
2
=
r
new
2
GM
R
.m
V
new
=
r
new
GM
E
,V
new
>V
old
Hence, K.E increased.
Since, the work done is along the field. Hence the potential energy of system decreases.
Explanation:
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