JEE Advanced · Physics · 8. Rotational Motion
A horizontal forceis applied at the centre of mass of a cylindrical object of massand radius, perpendicular to its axis as shown in the figure. The coefficient of friction between the object and the ground is. The centre of mass of the object has an acceleration. The acceleration due to gravity is. Given that the object rolls without slipping, which of the following statement(s) is (are) correct?

- A For the same , the value of does not depend on whether the cylinder is solid or hollow.
- B For a solid cylinder, the maximum possible value of is .
- C The magnitude of the frictional force on the object due to the ground is always .
- D For a thin-walled hollow cylinder, .
Answer & Solution
Correct Answer
(D) For a thin-walled hollow cylinder, .
Step-by-step Solution
Detailed explanation
Let moment of inertia For pure rolling,
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A cubical solid aluminum (bulk modulus \(=-\text V \frac{\text{dP}}{\text{dV}}=70\text{ GPa}\)) block has an edge length of 1 m on the surface of the earth. It is kept on the floor of a 5 km deep ocean. Taking the average density of water and the acceleration due to gravity to be \(10^3\text{ kg m} ^{-3}\) and \(10\text{ ms} ^{-2}\), respectively, the change in the edge length of the block in mm is _____________ .JEE Advanced 2020 Easy
- A student skates up a ramp that makes an angle with the horizontal. He/she starts (as shown in the figure) at the bottom of the ramp with speed and wants to turn around over a semicircular path of radius during which he/she reaches a maximum height (at point ) from the ground as shown in the figure. Assume that the energy loss is negligible and the force required for this turn at the highest point is provided by his/her weight only. Then ( is the acceleration due to gravity)
JEE Advanced 2020 Medium - For a prism of prism angle , the refractive indices of the left half and the right half are, respectively, and , as shown in the figure. The angle of incidence is chosen such that the incident light rays will have minimum deviation if For the case of unequal refractive indices, and (where ), the angle of emergence . Which of the following statement(s) is(are) correct?
JEE Advanced 2021 Hard - A freshly prepared sample of a radioisotope of half-life 1386 s has activity \({10}^{3}\) disintegrations per second. Given that In 2 = 0.693, the fraction of the initial number of nuclei (expressed in nearest integer percentage) that will decay in the first 80 s after preparation of the sample isJEE Advanced 2013 Medium
- In a radioactive decay process, the activity is defined as , where is the number of radioactive nuclei at time . Two radioactive sources, and have same activity at time . At a later time, the activities of and are and , respectively. When and have just completed their and half-lives, respectively, the ratio is _____.JEE Advanced 2023 Medium
- A parallel plate capacitor has a dielectric slab of dielectric constant K between its plates that covers 1/3 of the area of its plates, as shown in the figure. The total capacitance of the capacitor is C while that of the portion with dielectric in between is . When the capacitor is charged, the plate area covered by the dielectric gets charge and the rest of the area gets charge . The electric field in the dielectric is and that in the other portion is . Choose the correct option/options, ignoring edge effects.
JEE Advanced 2014 Medium
More PYQs from JEE Advanced
- Which of the following statement(s) is (are) correct about the spectrum of hydrogen atom?JEE Advanced 2021 Medium
- of molal urea solution (density at ) is mixed with of a solution containing of urea. Both the solutions were prepared in the same solvent. The osmotic pressure (in torr) of the resulting at is
[Use : Molar mass of urea ; gas constant, ;
Assume,JEE Advanced 2023 Easy - Paragraph:
Let \(S=S_{1} \cap S_{2} \cap S_{3}\), where
\(S_{1}=\{z \in \mathbb{C}:|z|<4\}, \quad S_{2}=\left\{z \in \mathbb{C}: \operatorname{Im}\left[\frac{z-1+\sqrt{3} i}{1-\sqrt{3} i}\right]>0\right\}\) and \(S_{3}=\{z \in \mathbb{C}: \operatorname{Re} z>0\}\).
Question:
Area of \(S=\)JEE Advanced 2013 Medium - The freezing point (in \({ }^{\circ} \mathrm{C}\) ) of solution containing \(0.1 \mathrm{~g}\) of \(\mathrm{K}_3\left[\mathrm{Fe}(\mathrm{CN})_6\right]\) (molecular weight 329\()\) in \(100 \mathrm{~g}\) of water \(\left(K_f=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)\) isJEE Advanced 2011 Easy
- Let be an integer. Take n distinct points on a circle and join each pair of points by a line segment. Colour the line segment joining every pair of adjacent points by blue and the rest by red. If the number of red and blue line segments are equal, then the value of n is ________JEE Advanced 2014 Hard
- An optical arrangement consists of two concave mirrors and , and a convex lens with a common principal axis, as shown in the figure. The focal length of is . The radii of curvature of and are and , respectively. The distance between and is . A point object is placed at the mid-point between and on the axis. When the distance between and is , one of the images coincides with . The value of is _____(Consider the case which gives minimum value).
JEE Advanced 2023 Medium