Question:
A box of mass 8 kg is placed on a rough inclined plane of inclination 30°. Its downward motion can be prevented by applying a horizontal force F, then value of F for which friction between the block and the incline surface is minimum, is
A box of mass 8 kg is placed on a rough inclined plane of inclination 30°. Its downward motion can be prevented by applying a horizontal force F, then value of F for which friction between the block and the incline surface is minimum, is
Updated On: Jun 25, 2024
- \(\frac {80}{\sqrt 3}\)
- \(40 \sqrt 3\)
- \(\frac {40}{\sqrt 3}\)
- \(80 \sqrt 3\)
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The correct option is (A): \(\frac {80}{\sqrt 3}\).
Was this answer helpful?
0
0
Top Questions on Inclined planes
- The moment of inertia of semicircular ring about an axis, passing through the center and perpendicular to the plane of ring, is \(\frac{1}{x} \)MR2 , where R is the radius and M is the mass of semicircular ring. The value of x will be___
- JEE Main - 2023
- Physics
- Inclined planes
Two inclined planes are placed as shown in figure. A block is projected from the point A of inclined plane AB along its surface with a velocity just sufficient to carry it to the top point B at a height 10 m. After reaching the point B the block sides down on inclined plane BC. Time it takes to reach to the point C from point A is t(√2 + 1) s. The value of t is ______.
(Use g = 10 m/s2)
Fig. - JEE Main - 2022
- Physics
- Inclined planes
- A block ‘A’ takes 2 s to slide down a frictionless incline of 30° and length ‘l’, kept inside a lift going up with uniform velocity ‘v’. If the incline is changed to 45°, the time taken by the block, to slide down the incline, will be approximately
- JEE Main - 2022
- Physics
- Inclined planes
- The magnetic flux through a coil perpendicular to its plane is varying according to the relation \(\varphi = 5t^3 + 4t^2 + 2t - 5\) Weber. If the resistance of the coil is 5 ohm, then the induced current through the coil at t = 2 s will be,
- JEE Main - 2022
- Physics
- Inclined planes
- Two blocks $A$ and $B$ of masses $m_A = 1 \; kg$ and $m_B = 3 \; kg$ are kept on the table as shown in figure. The coefficient of friction between $A$ and $B$ is $0.2$ and between $B$ and the surface of the table is also $0.2.$ The maximum force $F$ that can be applied on $B$ horizontally, so that the block $A$ does not slide over the block $B$ is : (Take $g = 10 \; m/s^2$)
- JEE Main - 2019
- Physics
- Inclined planes
View More Questions
Questions Asked in JIPMER MBBS exam
- If same charge q is placed inside a sphere and cube having radius 1m and side 2m respectively. What will be the ratio of flux passing through them ?
- JIPMER MBBS - 2019
- Electric Flux
- \(BrO^{3-}\) Changes into \(Br_2\) in an acidic medium of a unbalanced equation how many electron should be present on the balanced electron.
- JIPMER MBBS - 2019
- Balancing a redox reaction
- If resistivity of copper is \(1.72×10^{-8} \Omega-m\) and number of free electron in copper is \(8.5×10^{28} / m^3\). Find mobility
- JIPMER MBBS - 2019
- Resistance and Resistivity
- If equilibrium constant is 2.6×108 then find the value of ΔG°.
- JIPMER MBBS - 2019
- Thermodynamics
- Level of LH is maximum :
- JIPMER MBBS - 2019
- Hormones
View More Questions