Question

potential energy of a
body of mass
1kg of height of Im is lJ
true
False​

Answer 1

Answer:

False

Explanation:

According to the given question,

P.E. = potential energy = 1 J

m = mass = 1 kg

h = height = 1 m

g = acceleration due to gravity = 9.8 m/s^2

And we are asked to find if the P.E. is 1 j when m = 1 kg and h = 1 m.

We know,

P.E. = mgh

Putting the values we get,

P.E. = 1×9.8×1

P.E. = 9.8 J

Therefore,

We got P.E. as 9.8 J but in the given question it's 1 J, thus it's false.

Answer 2

Answer:

False.

Explanation:

PE = mgh

So, for h = 1 m,

m = 1 kg and

g = 9.8

m/s2 the PE is = (1)(9.8(1) = 9.8 J