Physics

Work, Energy and Power

Collisions

A steel ball of radius 2 {~cm} is at rest on a frictionless su

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Solving time: 2 mins

A steel ball of radius $2 cm$ is at rest on a frictionless surface. Another ball of radius $4 cm$ moving at a velocity
of $81 cm / sec$ collides elastically with first ball. After collision the smaller ball moves with speed of

Name: Video answer for A steel ball of radius 2 cm is at rest on a frictionless surface. Another ball of radius 4 cm moving at a velocity of 81 cm/sec collides elastically with first ball. After collision the smaller ball moves with speed of
Uploaded: 2022-11-25T15:27:30.000Z
Duration: 6 min
Description: A steel ball of radius 2 cm is at rest on a frictionless surface. Another ball of radius 4 cm moving at a velocity of 81 cm/sec collides elastically with first ball. After collision the smaller ball moves with speed of

81 cm / sec

63 cm / sec

144 cm / sec

None of these

Views: 6,175 students

Updated on: Nov 25, 2022

Text solutionVerified

Ratio of radius of steel balls

= 1/2

So, ratio in the masses

= \frac{1}{8} [

M \propto V \propto r^{3}]

Let

m_{1} = 8 m

and

m_{2} = m

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Asher Discussed

A steel ball of radius

2 cm

is at rest on a frictionless surface. Another ball of radius

4 cm

moving at a velocity
of

81 cm / sec

collides elastically with first ball. After collision the smaller ball moves with speed of

6 mins ago

Discuss this question LIVE

6 mins ago

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Question Text	A steel ball of radius $2 cm$ is at rest on a frictionless surface. Another ball of radius $4 cm$ moving at a velocity of $81 cm / sec$ collides elastically with first ball. After collision the smaller ball moves with speed of
Updated On	Nov 25, 2022
Topic	Work, Energy and Power
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 1
Upvotes	152
Avg. Video Duration	6 min

A steel ball of radius $2 cm$ is at rest on a frictionless surface. Another ball of radius $4 cm$ moving at a velocity
of $81 cm / sec$ collides elastically with first ball. After collision the smaller ball moves with speed of

Text solutionVerified

Video solutions (1)

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A steel ball of radius 2 cm is at rest on a frictionless surface. Another ball of radius 4 cm moving at a velocity of 81 cm/sec collides elastically with first ball. After collision the smaller ball moves with speed of

Text solutionVerified

Video solutions (1)

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A steel ball of radius $2 cm$ is at rest on a frictionless surface. Another ball of radius $4 cm$ moving at a velocity
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