MCQ
A particle moves with constant angular velocity in a circle. During the motion its
- ✓Energy is conserved
- BMomentum is conserved
- CEnergy and momentum both are conserved
- DNone of the above is conserved
✓
Answer
Correct option: A.
Energy is conserved
a
(a)In uniform circular motion (constant angular velocity) kinetic energy remains constant but due to change in velocity of particle its momentum varies.
(a)In uniform circular motion (constant angular velocity) kinetic energy remains constant but due to change in velocity of particle its momentum varies.
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
The value of critical temperature in terms of Vander Waal’s constant $a$ and $b$ is
→A barometer kept in an elevator reads $76 \,cm$ when it is at rest. If the elevator goes up with some acceleration, the reading will be .......... $cm$
→If the temperature of the body is increased by $10\% $ , the percentage increase in the emitted radiation will be ....... $\%$
→Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are $v$ and $2v$ at any instant, then the speed of centre of mass of the system will be
→A street car moves rectilinearly from station $A$ to the next station $B$ with an acceleration varying according to the law $a=(b-c x)$, where $b$ and $c$ are constants and $x$ is the distance from station $A$. The distance between the two stations and the maximum velocity are
→The diagram below shows a hydraulic lift.A force is applied at $side\ 1$ and an output force is generated at $side\ 2$. Which of the following is true?
→A light string passing over a smooth light fixed pulley connects two blocks of masses $m_1$ and $m_2$. If the acceleration of the system is $g / 8$, then the ratio of masses is
→The maximum energy in thermal radiation from a source occurs at the wavelength $4000Å$ . The effective temperature of the source is ....... $K$
→A cyclist moving on a circular track of radius $40\ m $ completes half a revolution in $40\ s.$ Its average velocity is:
→A molecule in a gas container hits a horizontal wall with speed $200\ ms^{-2}$ and angle ${30}^\circ$ with the normal and rebounds with the same speed. Which statement is true?
→