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question based on pure rotation about fixed axis questions with solutions
Practice Rotational Motion for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–4 of 4 questions
- MCQmediumRotational Motion
A uniform rod of mass m and length l suspended by means of two identical inextensible light strings as shown in figure. Tension in one string immediately after the other string is cut, is _______. (g acceleration due to gravity)
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JEE Mains 202621 January Morning Shift
Open question & full solution → - MCQmediumRotational Motion
A thin uniform rod (X) of mass M and length L is pivoted at a height L/3 as shown in the figure. The rod is allowed to fall from a vertical position and lie horizontally on the table. The angular velocity of this rod when it hits the table top, is_______.
(g = gravitational acceleration)
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JEE Mains 202624 January Evening Shift
Open question & full solution → - NumericmediumRotational Motion
Two masses m and 2m are connected by a light string going over a pulley (disc) of mass 30m with radius r = 0.1 m. The pulley is mounted in a vertical plane and it is free to rotate about its axis. The 2m mass is released from rest and its speed when it has descended through a height of 3.6 m is _______ m/s. (Assume string does not slip and g = 10 m/s²)
JEE Mains 202622 January Evening Shift
Open question & full solution → - MCQmediumRotational Motion
Two circular discs of radius each 10 cm are joined at their centres by a rod of length 30 cm and mass 600 gm as shown in figure. If the mass of each disc is 600 gm and applied torque between two discs is 43 × 10⁵ dyne cm, the angular acceleration of the discs about the given axis AB is ______ rad/s².
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JEE Mains 202628 January Morning Shift
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