a ball with a mass of 2 grams is sitting on the edge of a building that is 20 meters tall. what is its potential energy?

Question

a ball with a mass of 2 grams is sitting on the edge of a building that is 20 meters tall. what is its potential energy?

in progress 0
RuslanHeatt 2 days 2021-07-22T07:26:19+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-07-22T07:27:38+00:00

    Answer:

    The potential energy is 0.39 Joule

    Explanation:

    If a body of mass m is held at a height h above the ground it

    Then P. E= weight *height

    P.E=mgh

    Given data

    Mass m=2 grams to kg – – 2/1000=

    0.002kg

    Height h =20m

    Assuming g= 9.81m/s²

    Then P.E= 0.002*9.81*20

    P.E= 0.39J

    Potential energy is the energy possessed by a body by virtue of its position.

    0
    2021-07-22T07:27:41+00:00

    Answer:

    Explanation:

    Potential energy is given as

    P.E = mgh

    Where

    m is the mass of the body

    g is the acceleration due to gravity

    h is the height at which the object is at.

    In this question,

    m = 2gram

    m = 2 / 1000 = 0.002kg

    h = 10m

    g is constant = 9.8 m/s²

    Then,

    P.E = mgh

    P.E = 0.002 ×10 × 9.8

    p.E = 0.196 J

    The unit of potential energy is you’re and it is a scalar quantity, I.e it has no direction but has only magnitude.

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )