Physics, asked by ujjwalsaini, 1 year ago

A body of mass 2kg is thrown up at a velocity of 10m/s. Find the potential energy at the highest position.

Answers

Answered by Amir1

Mass of body given= 2 kg
Velocity(height of body)= 10m/s

Potential energy= mgh
Potential energy=2*10*10
=200J

Amir1: But the value of g is our choice 10 or 100

Amir1: because g is gravitation due to earth

Ashu31: i hadn't used g in my answer

Amir1: The actual formula of Potential energy is MGH

Amir1: by bookish

Ashu31: i think u hadn't heard the word mechanical energy

Amir1: Yes i have heares

Amir1: heared

Ashu31: then ?

Amir1: okk

Answered by Ashu31

Here we can use the concept of mechanical energy.
m.e.= p.e.+ k.e.
when the ball is at motion the p.e. = 0
k.e. = 1/2*m*v^2 =1/2*2*10^2= 100J
therefore m.e.=k.e.+p.e.=100J+0=100J
Now, when the body reaches and stops at the maximum height all the k.e. converts into p.e.
So, p.e. =100J

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