MCQ
What is the angular velocity of earth
- ✓$\frac{{2\pi }}{{86400}}rad/\sec $
- B$\frac{{2\pi }}{{3600}}rad/\sec $
- C$\frac{{2\pi }}{{24}}rad/\sec $
- D$\frac{{2\pi }}{{6400}}rad/\sec $
✓
Answer
Correct option: A.
$\frac{{2\pi }}{{86400}}rad/\sec $
a
(a)Angular velocity $ = \frac{{2\pi }}{T} = \frac{{2\pi }}{{24}}rad/hr$$ = \frac{{2\pi }}{{86400}}rad/s$
(a)Angular velocity $ = \frac{{2\pi }}{T} = \frac{{2\pi }}{{24}}rad/hr$$ = \frac{{2\pi }}{{86400}}rad/s$
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
A thin wire of length $/$ and mass $m$ is bent in the form of a semicircle. The moment of inertia about an axis perpendicular to its plane and passing through the end of the wire is .............
→On which of the following four processes, does the functioning of a bimetallic strip depends
→$(i)$ Radiation
$(ii)$ Energy conversion
$(iii)$ Melting
$(iv)$ Thermal expansion
A wall clock uses a vertical spring-mass system to measure the time. Each time the mass reaches an extreme position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles it will:
If the distance covered by an object is directly proportional to time, then we can say that the object :
The position vector of $1\,kg$ object is $\overrightarrow{ r }=(3 \hat{ i }-\hat{ j })\,m$ and its velocity $\overrightarrow{ v }=(3 \hat{ j }+ k )\,ms ^{-1}$. The magnitude of its angular momentum is $\sqrt{ x } Nm$ where $x$ is
→A screw gauge has some zero error but its value is unknown. We have two identical rods. When the first rod is inserted in the screw, the state of the instrument is shown by diagram $(I).$ When both the rods are inserted together in series then the state is shown by the diagram $(II).$ What is the zero error of the instrument ? .......... $mm$
→$1\,M.S.D. = 100\, C.S.D. = 1\, mm $ 
Two closed organ pipes, when sounded simultaneously gave $4$ beats per sec. If longer pipe has a length of $1m$. Then length of shorter pipe will be, ... $cm$ $(v = 300 m/s)$
→The ratio of energy of emitted radiation of a black body at ${27^o}C$ and ${927^o}C$ is
→Velocity-displacement graph of a particle moving in a straight line is as shown in figure
A bomber plane moves horizontally with a speed of $500\,m/s$ and a bomb released from it, strikes the ground in $10\,sec$. Angle with horizontal at which it strikes the ground will be $(g = 10\,m/s^2)$
→