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What should be the height of the building when a 20 kg object is dropped from the top of the building having 5000 joules of energy at the time of hitting the ground [ g=9.8 m/s²]

Posted by Ayushi ... 3 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Ayushi ... 3 years, 11 months ago

Thanks abhishek and Yogita?

Abhishek Chaudhary 3 years, 11 months ago

Gravitational potential energy is given W = mgh where, W = 5000 joules H = height above the ground=? m =20kg g = 9.8m/s square W = mgh 5000 = 20 x 9.8 x h h = 5000/20 x 9.8 = 5000/196 = 25.51 .

Yogita Ingle 3 years, 11 months ago

Gravitational potential energy is given by the expression,

W = m g h

where,

W =5000 joules

h = Height above the ground = ?

m = Mass of the object = 20 kg

g = Acceleration due to gravity = 9.8 m/s²

5000 = 20 × 9.8 × h

h = 5000/196 = 25.51 m

Avnish Dubey 3 years, 11 months ago

Good

Ayushi ... 3 years, 11 months ago

Send full solution.... Please

ANSWER

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