Com Flashcards by joel mammen isaac

Q

C.O.M of Semi circular ring is

A

2R/pi

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Q

C.O.M of Semi circular disc

A

4R/3pi

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Q

Centre of mass of hemispherical shell

A

R/2

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Q

Centre of mass of solid cone

A

H/4

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Q

Centre of mass of hollow cone

A

H/3

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Q

Centre of mass of circular arc

A

Rsinθ/θ

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Q

Centre of mass of sector of circle plate

A

2Rsinθ/3θ

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Q

Centre of mass of solid hemisphere

A

3R/8

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Q

Height attained by the ball after the nth rebound.

A

e²ⁿh

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Q

Time Taken for the nth rebound

A

eⁿt

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Q

Total time taken for bouncing of ball

A

T = t(1+e/1-e)

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Q

Total distance travelled by a bouncing ball

A

S = h(1+e²/1-e²)

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Q

Velocity immediately after the nth rebound

A

eⁿv

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