SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

The spool shown in the figure is placed on a rough horizontal surface and has inner radius  and outer radius . The angle  between the applied force and the horizontal can be varied. The critical angle (  for which the spool does not roll and remains stationary is given by

a)

b)

c)

d)


Question ID - 100262 :-

The spool shown in the figure is placed on a rough horizontal surface and has inner radius  and outer radius . The angle  between the applied force and the horizontal can be varied. The critical angle (  for which the spool does not roll and remains stationary is given by

a)

b)

c)

d)

1 Answer
5876 Votes
3537

Answer Key : (a) -

(a)

If the spool is not to translate,

…(i)

If the spool is not to rotate,

…(ii)

or

or

Also the line of action of  should pass through the bottom most point



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Universal blood recipient is

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Blood group-O

2)

Blood group-AB

3)

Blood group –A

4)

Blood group-B


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