Find the gravitational potential energy of 1 kg
mass kept at a height of 5 m above the ground.
Calculate its kinetic ene

Question

Find the gravitational potential energy of 1 kg
mass kept at a height of 5 m above the ground.
Calculate its kinetic energy when it falls and hits the
ground. Take g = 10 m s-2. Ans. 50 J, 50 J
​

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Ariana 4 months 2021-08-01T09:52:00+00:00 1 Answers 0 views 0

Answers ( )

  1. Aaliyah
    0
    2021-08-01T09:53:49+00:00
    Reply

    \huge{ \mathtt{Given :-}}

    • Mass of the object = 1 kg
    • Height above the ground = 5m
    • g = 10m/s²

    \huge{ \mathtt{To \: Find :-}}

    • Gravitational Potential Energy
    • Kinetic Energy

    \huge{ \mathtt{Solution:-}}

    Potential energy = mgh

    = 1 × 10 × 5 = 50 Joules.

    Kinetic energy = 1/2×m×v²

    = 1/2 × 1 × V² => V = ?

    \\

    \huge\red{Using \: Third \: equation \: of \: motion}

    V² – U² = 2as

    V² –0² = 2 (10)(5)

    V² = 100

    V = 10 m/s

    \\

    Hence, kinetic Energy =

    = \frac{1}{2} \times 1 \times {(10)}^{2} \\ \\ = \frac{1}{2} \times 100 \\ \\ = 50 \: joules

    Hence, the kinetic energy = 50 J and potential energy = 50 J

    \\

    \huge \purple{ \underline{ \underline{ \mathtt{ \: ⭐hope \: \: this \: \: helps \: \: you⭐}}}}

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