Question

मास ऑफ 5kg डिसेंडिंग भट्टी काली ड्रोसॉफिला शॉप 3KG बाय मींस ऑफ लाइटस्ट्रीम पासिंग बरेली​

Answer 1

Answer:

.

.

.

.I don't know.

.

.

.

• .not able to.
• understand
• samaghna
• Singh's

Answer 2

Answer:

Assuming no friction between plank and block.

By momentum conservation ,

⇒1v=5u

⇒v=5u

energy conservation when spring is at neutral position.

⇒

2

1

kx

2

=

2

1

mu

2

+

2

1

m

2

v

2

2

1

×100×1

2

=

2

1

×5×u

2

+

2

1

×1×(5u)

2

100=30u

2

⇒u

2

=

30

100

=

3

10

⇒u=

3

10

.

Hence, the answer is

3

10

Explanation:

Pls mark me as brainlist and follow me.