EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Centre of Mass>TS EAMCET Medical 2021 (9-Aug Shift-1)>Q 3

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A homogenous semi circular plate of radius $9 cm$ placed at the origin as shown in the figure. The coordinate of center of mass is (Assume thickness is negligible)

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Important Questions on Centre of Mass

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Centre of Mass>TS EAMCET - 9 August 2021 Shift 2>Q 4

Three spheres

A, B

and

C

each of mass

1 kg

and radii

R, 2 R

and

3 R

respectively are kept touching each other as shown in the figure. Assuming the centers of the spheres are on a straight line, the distance of centre of mass of the system from the center of sphere,

A

is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Centre of Mass>TS EAMCET - 9 August 2021 Shift 2>Q 5

If the sum of external forces acting on a system is zero, then the centre of mass

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Centre of Mass>TS EAMCET - 10 August 2021 Shift 1>Q 6

A rod has length

L .

The linear mass density is

2 x kg m^{- 1}

where

x

is the distance from the left end. The centre of mass of the rod from the left end lies at a distance of
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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Centre of Mass>TS EAMCET 2020 (28-Sep Shift-1)>Q 7

Two balls

A

and

B

of masses

50 kg

and

20 kg

are moving in a straight line in the same direction at speed of

9 km h^{- 1}

and

18 km h^{- 1}

respectively. Ball

B

hits

A

and reverses its direction at a speed of

27 km h^{- 1} .

The speed of the ball

A

after the collision is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Centre of Mass>TS EAMCET Medical 2019 (8-May Shift-2)>Q 8

Consider two particles

1

and

2

moving with constant velocities

{\vec{v}}_{1}

and

{\vec{v}}_{2}

. If

{\vec{r}}_{1}

and

{\vec{r}}_{2}

are the radius vectors of the particles at the start, the relation between

{\vec{r}}_{1}, {\vec{r}}_{2}, {\vec{v}}_{1}

and

{\vec{v}}_{2}

when the two particles collide is