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How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 ms –2 ,

How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 ms–2,

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5965 Points
10 months ago
Dear Student

Mass of dumb-bell = 10 kg
Height, h = 80 cm = 0.8 m
a = 10 m/s^2
u = 0
v2– u2= 2 as
v2– (0)^2= 2 × 10 × 0.8
v2= 16
v = 4 m/s
Momentum p = mv
= 10 × 4
= 40 kgm/s

Thanks

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