1
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
+4
-0
A person of 80 kg mass is standing on the rim
of a circular platform of mass 200 kg rotating
about its axis at 5 revolutions per minute (rpm).
The person now starts moving towards the
centre of the platform. What will be the
rotational speed (in rpm) of the platform when
the person reaches its centre _________.
Your input ____
2
JEE Main 2020 (Online) 9th January Morning Slot
Numerical
+4
-0
One end of a straight uniform 1m long bar is
pivoted on horizontal table. It is released from
rest when it makes an angle 30º from the
horizontal (see figure). Its angular speed when
it hits the table is given as $$\sqrt n $$ s-1, where n is
an integer. The value of n is _________.
![JEE Main 2020 (Online) 9th January Morning Slot Physics - Rotational Motion Question 125 English](https://imagex.cdn.examgoal.net/7k9k2k5inx220/932791e2-6cc1-40c3-959d-22be95ac1d9f/8e295280-396e-11ea-92dd-4b9c3519996f/file-7k9k2k5inx221-169w.jpg)
![JEE Main 2020 (Online) 9th January Morning Slot Physics - Rotational Motion Question 125 English](https://imagex.cdn.examgoal.net/7k9k2k5inx220/932791e2-6cc1-40c3-959d-22be95ac1d9f/8e295280-396e-11ea-92dd-4b9c3519996f/file-7k9k2k5inx221-169w.jpg)
Your input ____
3
JEE Main 2020 (Online) 9th January Morning Slot
Numerical
+4
-0
A body of mass m = 10 kg is attached to one
end of a wire of length 0.3 m. The maximum
angular speed (in rad s–1) with which it can be
rotated about its other end in space station is :
(Breaking stress of wire = 4.8 × 107 Nm–2 and
area of cross-section of the wire = 10–2 cm2) is:
(Breaking stress of wire = 4.8 × 107 Nm–2 and
area of cross-section of the wire = 10–2 cm2) is:
Your input ____
4
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
+4
-0
![JEE Main 2020 (Online) 7th January Evening Slot Physics - Rotational Motion Question 129 English](https://imagex.cdn.examgoal.net/7k9k2k5fde6lr/13bf7d0d-e687-4859-9e80-98eee665fdca/0c0fc7f0-379f-11ea-92dd-4b9c3519996f/file-7k9k2k5fde6ls-268w.jpg)
Your input ____
Questions Asked from Rotational Motion (Numerical)
Number in Brackets after Paper Indicates No. of Questions
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