A sphere is placed rotating with its centre initially at rest in a corner as shown in figures (a) and (b). Coefficient of friction between all surfaces and the sphere is 1/3. Find the ratio of the friction forces 
by ground in situation (a) and (b)
.png)
|
a) |
1 |
b) |
|
c) |
|
d) |
None of these |
Question ID - 100233 | SaraNextGen Answer A sphere is placed rotating with its centre initially at rest in a corner as shown in figures (a) and (b). Coefficient of friction between all surfaces and the sphere is 1/3. Find the ratio of the friction forces by ground in situation (a) and (b)
a)
1
b)
c)
d)
None of these
A sphere is placed rotating with its centre initially at rest in a corner as shown in figures (a) and (b). Coefficient of friction between all surfaces and the sphere is 1/3. Find the ratio of the friction forces by ground in situation (a) and (b)
|
a) |
1 |
b) |
|
c) |
|
d) |
None of these |
(b)
In figure, for translational equilibrium in vertical direction
.png)
In horizontal direction
…(ii)
Solving.Eqs. (i) and (ii),
The required friction is
In figure, the sphere has the tendency to move toward the right;
Which gives 
