physics chemistry maths science forums
become expert I help I sign up I login
refer a friend - earn nickels!!   
 advanced
 
Home
Ask & Discuss Questions
Study Material
Experts Zone
Hang Out!

Ask & Discuss Questions with Community & Experts

Moderation Team
   advanced
Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Frictionless surface
Forum Index -> Mechanics like the article? email it to a friend.  
Author Message
edison (3966)

Forum Expert Blazing goIITian

Olaaa!! Perrrfect answer. 700  [933 rates]

edison's Avatar

total posts: 1998    
offline Offline
A thin uniform rod is initially positioned in the vertical direction, with its lower end attached to a frictionless axis that is mounted on the floor. The rod has a length of 2.00 m and is allowed to fall, starting from rest. Find the tangential speed of the free end of the rod, just before the rod hits the floor after rotating through 90 degree.
a.       3.59 m/s
b.      4.26 m/s
c.       5.89 m/s
d.      7.67 m/s
e.       6.83 m/s
    
ashish_banga (720)

Blazing goIITian

Olaaa!! Perrrfect answer. 110  bad job dude!! I dont approve of this answer! 1  [197 rates]

ashish_banga's Avatar

total posts: 913    
online Online
is it 7.67


 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
ashish_banga (720)

Blazing goIITian

Olaaa!! Perrrfect answer. 110  bad job dude!! I dont approve of this answer! 1  [197 rates]

ashish_banga's Avatar

total posts: 913    
online Online
use conservation of energy
mg(l/2) = 1/2 I w^2
find w
then velocity of free end = l w


 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
sunip_the_mini_mastermind (123)

Hot goIITian

Olaaa!! Perrrfect answer. 17  [36 rates]

sunip_the_mini_mastermind's Avatar

total posts: 197    
offline Offline
i too tried it this wayy....but my ans came out to be 10.83



Animated Letters
 this reply: 0 points  (with Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
 
Forum Index -> Mechanics
Go to:   

Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Narayana - Kota , Delhi , Others
Brilliant Tutorials - Class , Crash
Aakash Institute - Medical , Engg
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya