Aisha dropped an object of mass 4 Kg from a height of 10m.
The object has a speed of 0 m/s at position A and is at a height
Cill all
Raman
10)
А
B
of 10m above the ground. At position B, the object is 6m above
the ground. At position C, the object is 4m above the ground.
At point D, the object is mere picometer (almost at 0 meter height)
above the ground. Assume negligible air resistance throughout
the motion. Use this information to fill in the table. (g=10m/s2)
u
Answers
Given,
H
1
=8m
H
2
=6m
The height from which the body falls gives it a potential energy which converts to kinetic energy as the body falls down. When the body finally hits the ground, all the potential energy was converted to kinetic energy. If we assume the mass of body as M kg, then
Mgh = (final kinetic energy)
80M = (final K.E.) Since g=10m/s
2
Since the ball got 6m height,
So, KE=
8
6
×100
=75%
Thus the energy loss when the object was bounced back,
(100−75)%=25%
4
1
Answer:
Given,
H
1
=8m
H
2
=6m
The height from which the body falls gives it a potential energy which converts to kinetic energy as the body falls down. When the body finally hits the ground, all the potential energy was converted to kinetic energy. If we assume the mass of body as M kg, then
Mgh = (final kinetic energy)
80M = (final K.E.) Since g=10m/s
2
Since the ball got 6m height,
So, KE=
8
6
×100
=75%
Thus the energy loss when the object was bounced back,
(100−75)%=25%