Question

I 2021 04:00:00 PM to 26 Jul
07:05:00 PM
Total time: 185
minutes
4 bints
11
5. A mass of 10 g moving with a velocity as
100cm s 'strikes a pendulum bob of mass
10 g. The two masses stick together. The
maximum height reached by the system now
is (g = 10m/s)
(A) zero
(B) 1.25 cm
(C) 5 cm
(D) 2.5 cm
O(A)
O (B)
O (C)​

Answer 1

Answer:

Pls mark me as brainliest

Correct option is

D

1.25cm

Initially mass 10 gm moves with velocity 100cm/s

∴ Initial momentum = 10×100=1000  

sec

gm×m

​

 

After collision system moves with velocity v  

sys

​

 then  

Final momentum = (10+10)×v  

sys

​

 

By applying the conservation of momentum  

10000=20×v  

sys

​

⇒V  

sys

​

=50cm/s

If system rises up to height  h then  

h=  

2g

v  

sys

2

​

 

​

=  

2×1000

50×50

​

=  

2

2.5

​

=1.25cm

Explanation:

Answer 2

Answer:

22344523565645778877356788999 cm