Rotational Motion JEE Main 2020 Questions Solutions | One Shot | Mohit Goenka
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Do you still fear Rotation chapter ?
Eduniti - Physics by Mohit Goenka brings a series of best solutions of JEE Main 2020 physics questions. In this video we discuss 26 questions on Rotational Motion asked in JEE Main 2020.
Q3 - Three solid spheres each of mass m and diameter d are stuck together such that the lines connecting the centers form an equilateral triangle of side of length d. The ratio I0/IA of moment
of inertia I0 of the system about an axis passing the centroid and IA about center of any of the spheres and perpendicular to the plane of the triangle is
Q4 - Mass per unit area of a circular disc of radius a depends on the distance r from its center as (r) A Br. The moment of inertia of the disc about the axis, perpendicular to the plane and passing through its center is
Q12 - As shown in the figure, a bob of mass m is tied by a massless string whose other end portion is wound on a fly wheel (disc) of radius r and mass m. When released from rest the bob starts falling vertically. When it has covered a distance of h, the angular speed of the wheel will be
Q15 - A uniform cylinder of mass M and radius R is to be pulled over a step of height a (a less than R) by applying a force F at its Centre ‘O’ perpendicular to the plane through the axes of the cylinder on the edge of the step (see figure). The minimum value of F required is
Q18 - A uniform rod of length ‘l’ is pivoted at one of its ends on a vertical shaft of negligible radius. When the shaft rotates at angular speed the rod makes an angle with it (see figure). To find equate the rate of change of angular momentum (direction going into the paper ) 2 2 sin cos 12 ml about the center of mass (CM) to the torque provided by the horizontal and vertical forces FH and FV about the CM. The value of is then such that
Q19 - A block of mass m = 1 kg slides with velocity v = 6 m/s on a frictionless horizontal surface and collides with a uniform vertical rod and sticks to it as shown. The rod is pivoted about O and swings as a result of the collision making angle before momentarily coming to rest. If the rod has mass M = 2 kg, and length l = 1 m, the value of is approximately (Take g = 10 m/s2)
Q21 - ABC is a plane lamina of the shape of an equilateral triagnle. D, E are mid points of AB, AC and G is the centroid of the lamina. Moment of inertia of the lamina about an axis passing through G and perpendicular to the plane ABC is I0. If part ADE is removed, the moment of inertia of the remaining part about the same axis is 0 16 NI where N is an integer. Value of N is
#JEEMain2020Solutions #RotationalMotion #Eduniti
#JEEMain2021 #IIT #MohitGoenka
#TargetJEEAdvanced2021 #JEEmain2022
#TargetNEET2021
About Faculty-
Completed Bachelors and Masters from IIT Kharagpur. Having an experience of +4 Years in teaching I reckoned the urge within me to help students appreciate the subject by delivering the toughest concept in simplest manner through practical demonstrations and visual aids.
Follow us on
😍Facebook - Facebook: edunitiphysics
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✅JEE Main 2021 March Attempt Solutions [PYQs]
🔥 +170 Questions Solution of JEE Main...
✅JEE Main 2021 Feb Attempt Solutions [PYQs]
🔥 +150 Questions Solution of JEE Main...
✅JEE Main 2020 Solutions [PYQs]
PYQs JEE Main 2020 Questions
✅JEE Main Practice Problems
Question Practice JEE Main Level
✅IIT JEE Main | NEET Concepts in Short
https://bit.ly/3dBL86S
✅Shorts Tricks For Solving
https://bit.ly/3fJXOLz
Do you still fear Rotation chapter ?
Eduniti - Physics by Mohit Goenka brings a series of best solutions of JEE Main 2020 physics questions. In this video we discuss 26 questions on Rotational Motion asked in JEE Main 2020.
Q3 - Three solid spheres each of mass m and diameter d are stuck together such that the lines connecting the centers form an equilateral triangle of side of length d. The ratio I0/IA of moment
of inertia I0 of the system about an axis passing the centroid and IA about center of any of the spheres and perpendicular to the plane of the triangle is
Q4 - Mass per unit area of a circular disc of radius a depends on the distance r from its center as (r) A Br. The moment of inertia of the disc about the axis, perpendicular to the plane and passing through its center is
Q12 - As shown in the figure, a bob of mass m is tied by a massless string whose other end portion is wound on a fly wheel (disc) of radius r and mass m. When released from rest the bob starts falling vertically. When it has covered a distance of h, the angular speed of the wheel will be
Q15 - A uniform cylinder of mass M and radius R is to be pulled over a step of height a (a less than R) by applying a force F at its Centre ‘O’ perpendicular to the plane through the axes of the cylinder on the edge of the step (see figure). The minimum value of F required is
Q18 - A uniform rod of length ‘l’ is pivoted at one of its ends on a vertical shaft of negligible radius. When the shaft rotates at angular speed the rod makes an angle with it (see figure). To find equate the rate of change of angular momentum (direction going into the paper ) 2 2 sin cos 12 ml about the center of mass (CM) to the torque provided by the horizontal and vertical forces FH and FV about the CM. The value of is then such that
Q19 - A block of mass m = 1 kg slides with velocity v = 6 m/s on a frictionless horizontal surface and collides with a uniform vertical rod and sticks to it as shown. The rod is pivoted about O and swings as a result of the collision making angle before momentarily coming to rest. If the rod has mass M = 2 kg, and length l = 1 m, the value of is approximately (Take g = 10 m/s2)
Q21 - ABC is a plane lamina of the shape of an equilateral triagnle. D, E are mid points of AB, AC and G is the centroid of the lamina. Moment of inertia of the lamina about an axis passing through G and perpendicular to the plane ABC is I0. If part ADE is removed, the moment of inertia of the remaining part about the same axis is 0 16 NI where N is an integer. Value of N is
#JEEMain2020Solutions #RotationalMotion #Eduniti
#JEEMain2021 #IIT #MohitGoenka
#TargetJEEAdvanced2021 #JEEmain2022
#TargetNEET2021
About Faculty-
Completed Bachelors and Masters from IIT Kharagpur. Having an experience of +4 Years in teaching I reckoned the urge within me to help students appreciate the subject by delivering the toughest concept in simplest manner through practical demonstrations and visual aids.
Follow us on
😍Facebook - Facebook: edunitiphysics
😍Instagram - Instagram: eduniti
4 سال پیش
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