sign up I login
 advanced
refer a friend - earn nickels!!

Ask & Discuss Questions with Community & Experts

 Moderation Team
 90 chars left    advanced
Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Rotation
Forum Index -> Mechanics like the article? email it to a friend.  
Author Message
[Post New]1 May 2008 13:29:26 IST
    Subject: Rotation
[Up] View Post
sachin_gupta1991 (69)

Hot goIITian

Olaaa!! Perrrfect answer. 13  [15 rates]
sachin_gupta1991's Avatar
total posts: 139    
offline Offline

Q. A solid sphere starts from rest at the top of an incline of height h and length l and moves down.The force of friction between the sphere and the incline is F.The friction is F. The friction is insufficient to prevent slipping.The kinetic energy of the sphere at the bottom of the incline is K. Then,


    A)the work done by friction is Fl.


    B)the heat produced is Fl.


    C)K=mgh-Fl.


    D)K>mgh-Fl.
    
[Post New]1 May 2008 13:50:08 IST
    Subject: Rotation
[Up] View Post
celestine (76)

Cool goIITian

Olaaa!! Perrrfect answer. 12  [20 rates]
celestine's Avatar
total posts: 96    
offline Offline
A B C if l is slant length
IM NO BABY
I HAVE THE SEVENTH SENSE
NONSENSE!!!!!!!!!!!
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[Post New]1 May 2008 14:41:09 IST
    Subject: Rotation
[Up] View Post
RyuAmakusa (618)

Blazing goIITian

Olaaa!! Perrrfect answer. 98  [162 rates]
RyuAmakusa's Avatar
total posts: 504    
offline Offline
i guess it may be a,c we cant be sure that the loss is in the form of heat only it may come out even as sound or light.....we never know
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[Post New]1 May 2008 15:10:58 IST
    Subject: Re:Rotation
[Up] View Post
sachin_gupta1991 (69)

Hot goIITian

Olaaa!! Perrrfect answer. 13  [15 rates]
sachin_gupta1991's Avatar
total posts: 139    
offline Offline

The answer is d.


Dunno how,though.
 this reply: 0 points  (with 0 Olaaa!! Perrrfect answer.   in 0 votes )   [?]
 
You have to be logged on to rate
  
[Post New]1 May 2008 15:44:58 IST
    Subject: Rotation
[Up] View Post
celestine (76)

Cool goIITian

Olaaa!! Perrrfect answer. 12  [20 rates]
celestine's Avatar
total posts: 96    
offline Offline
The question might be choose the wrong ans
IM NO BABY
I HAVE THE SEVENTH SENSE
NONSENSE!!!!!!!!!!!
 this reply: 0 points  (with 0 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