Activity 10.15 An object of mass 20 kg is dropped from a height of 4 m

PHYSICS · Subjective · CBSE · Physics · Work and Energy · Work and Energy

Problem

Activity ____\_\_\_\_ 10.15 □\square An object of mass 20 kg is dropped from a height of 4 m . Fill in the blanks in the following table by computing the potential energy and kinetic energy in each case.
Height at which object is locatedPotential energy ( Ep=mgh)\left.E_{p}=m g h\right)Kinetic energy ( Ek=mv2/2E_{k}=m v^{2} / 2 )Ep+EkE_{p}+E_{k}
mJJJ
4
3
2
1
Just above the ground
For simplifying the calculations, take the value of gg as 10 m s−210 \mathrm{~m} \mathrm{~s}^{-2}.

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