very fundamental questions

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#Physics #Mechanics

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15 Answers

11

virang1 Jhaveri ·2009-03-09 03:16:15

Q1
B) E) D)

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11

virang1 Jhaveri ·2009-03-09 03:17:00

Q2
B)

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106

Asish Mahapatra ·2009-03-09 03:18:30

@virang.. i will tell the answers (or hopefully nishant bhaiyya will) after 1 day.. u can post ur explanation if u like...

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11

virang1 Jhaveri ·2009-03-09 03:18:50

Q 3
B)

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1

Aditya Chatterjee ·2009-03-09 21:20:47

T₁=3g, T₂=6g so T₁>T₂. pulley is frictionless so no net force is applied by the string on pulley and hence the pulley doesnt rotate. the string slips over the pulley. if frictionâ‰ 0 then string offers friction to the pulley n hence pulley recieves a force around the centre of mass and rotates.
but of course T₁>T₂ still.

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106

Asish Mahapatra ·2009-03-09 21:22:22

but pulley still has mass doesn't it?

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1

Aditya Chatterjee ·2009-03-09 21:26:12

the tension wont depend on the pulleys mass.

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1

Aditya Chatterjee ·2009-03-09 21:26:46

will it??

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21

tapanmast Vora ·2009-03-09 21:27:39

I agree wid ADITYA...........

a,e,d for question 1

@ asis mass hai to kya harz hai...... kisi bhi non frivctional surface mein mass to hota hi he

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21

tapanmast Vora ·2009-03-09 21:30:37

Q2 mein d,e are out of quest....

we need to think only tension portion, same i guess will be the case in Q3 not in terms of tenson ofcorse

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1

Aditya Chatterjee ·2009-03-09 21:32:02

srry my mistake it shud b T₁=T₂

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11

Mani Pal Singh ·2009-03-09 21:38:17

CASE 1 : F₁+F₂=F₃ body is in equilibrium

CASE2 : F₁+F₂=F₃ there is no mass of pulley so Î¼mg waale factor mein m->o

CASE3 : F₁+F₂=F₃ yahan pe friction hi gayab hai!!!!!!!!!

CASE4 : iss mein rotation hogi aur torque conserve karni padegi
but iss mein thodi confusion hai
try karte hain isko bhi

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1

Aditya Chatterjee ·2009-03-09 21:42:46

wat is F₁ F₂ and F₃?

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106

Asish Mahapatra ·2009-03-09 21:44:03

Paragraph 1
Q1. Q2. (a) (d) (e)
Q3. (c)

these are my answers...
most of the guys have answered correctly...[1]

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106

Asish Mahapatra ·2009-03-09 21:44:37

F₁ F₂ F₃ are forces acting on the pulley at the respective points.

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

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