I am not understand why 1/2mv2=mgh
Answers
Answered by
1
1/2mv² = mgh
we have to check the correctness
by dimensional analysis
So LHS
Dimensional formula of 1/2mv²
will. be [M¹ L²T-²]
so now RHS
mgh
dimensional formula of mass is [M¹]
dimensional formula of g (acceleration due to gravity) is [ L¹ T-²]
dimensional formula of height(length) is [L¹]
so dimensional formula of mgh will be
= [M¹ L²T-² ]
so LHS = RHS
Answered by
0
Energy always remains constant.
It can neither be created, nor be destroyed.
So, When is body is in motion, it has Kinetic energy, K. E. = 1/2 mv^2
And when the body is at rest, it has Potential energy, P. E. = mgh
Since, energy always remains constant.
So, 1/2 mv^2 = mgh
ritu1981rs:
Pls ans in term of dimension
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