Question

A dum bell of 10 kg mass falls from a height of 0.8m. What is the momentum transferred by the dum bell while hitting the ground.

Answer 1

Yello,

The momentum transferred by the dum bell while hitting the ground is 3.17 Kgm/s. (approximately 3.2 Kgm/s)

Explanation in pic .


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Answer 2

Velocity when it hits the ground is
v = √(2gH)
= √(2 × 10 m/s² × 0.8 m)
= 4 m/s

Momentum = Mass × Velocity
= 10 kg × 4 m/s
= 40 kgm/s

Momentum transferred by the dum bell is 40 kgm/s