Question
Why do tyres have a better grip of the road while going on a level road than while going on an incline?
✓
Answer
Normal on ground is mg but on incline it is mg $\cos\theta$ so on the incline $\mu_\text{N}$ will be less and hence less gripping.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Answer the following questions:
- Optical and radio telescopes are built on the ground while X-ray astronomy is possible only from satellites orbiting the Earth. Why?
- The small ozone layer on top of the stratosphere is crucial for human survival. Why ?
Calculate the shortest wavelength in the Balmer series of hydrogen atom. In which region (infra-red, visible, ultraviolet) of hydrogen spectrum does this wavelength lie?
A parallel beam of light of wavelength $500\ nm$ falls on a narrow slit and the resulting diffraction pattern is observed on a screen $1 m$ away. It is observed that the first minimum is at a distance of $2.5\ mm$ from the centre of the screen. Find the width of the slit.
→The peak power consumed by a resistive coil, when connected to an AC source, is 80W. Find the energy consumed by the coil in 100 seconds, which is many times larger than the time period of the source.
$A$ small block $B$ is placed on another block $A$ of mass $5\ kg$ and length $20\ cm.$ Initially the block $B$ is near the right end of block $A. A$ constant horizontal force of $10N$ is applied to the block $A$. All the surfaces are assumed frictionless. Find the time elapsed before the block $B$ separates from $A.$
→What is the impact parameter? Explain the trajectory of $\alpha$-particle from it.
→From what electric dipole of electric field is found and for which two cases is the result simple?
The magnetic field inside a tightly wound, long solenoid is $\text{B}=\mu_0\text{ni}.$ It suggests that the field does not depend on the total length of the solenoid, and hence if we add more loops at the ends of a solenoid the field should not increase. Explain qualitatively why the extra-added loops do not have a considerable effect on the field inside the solenoid.
→Let $\vec{\text{a}}=4\vec{\text{i}}+3\vec{\text{j}}$ and $\vec{\text{b}}=3\vec{\text{i}}+4\vec{\text{j}}.$ (a) Find the magnitudes of:
→- $\vec{\text{a}}$
- $\vec{\text{b}}$
- $\vec{\text{a}}+\vec{\text{b}}$
- $\vec{\text{a}}-\vec{\text{b}}$
If the radius of the nucleus of $Al ^{27}$ is 3.6 Fermi , then what will be the radius of the $Fe ^{125}$ nucleus?
→