Two stones of different masses are dropped simultaneously from the top of a building
9.
(a) Smaller stone hit the ground earlier
(b) Larger stone hit the ground earlier
(c) Both stones reach the ground simultaneously
(d) Which of the stones reach the ground earlier depends on the composition of the stone
(e) A body starts to fall freely under gravity. The distances covered by it in first, second and third second are in ratio
(a) 1:3:5
(b) 1:2:3
(c) 1:4:9
(d) 1:5:6
9.
(a) Smaller stone hit the ground earlier
(b) Larger stone hit the ground earlier
(c) Both stones reach the ground simultaneously
(d) Which of the stones reach the ground earlier depends on the composition of the stone
(e) A body starts to fall freely under gravity. The distances covered by it in first, second and third second are in ratio
(a) 1:3:5
(b) 1:2:3
(c) 1:4:9
(d) 1:5:6
Answers & Comments
Answer:
small stone will be answer
Answer:
Correct option is C)
The time of free fall is given by : t=
g
2h
.Since t doesn't depend on mass as well as h and g are same , both stones reach the ground simultaneously.
Correct option is A)
According to equation of motion, distance covered in nth sec.
S
n
=u=
2
a
(2n−1)
S
n
=
2
a
(2n−1)
∴S
1
:S
2
:S
3
={2(1)−1}:{2(2)−1}:{2(3)−1}
=1:3:5