MCQ
When an object is in equilibrium state, then
- AIt must be at rest
- BNo force is acting on it
- ✓Its net acceleration must be zero
- DAll of these
✓
Answer
Correct option: C.
Its net acceleration must be zero
c
(c)
(c)
Equilibrium $\Rightarrow \vec{F}_{\text {net }}=0$
Using Newton's second law, $\vec{a}=0$
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
Two cylinders $A$ and $B$ fitted with pistons contain equal amounts of an ideal diatomic gas at $300 K$ . The piston of $A$ is free to move while that of $B$ is held fixed. The same amount of heat is given to the gas in each cylinder. If the rise in temperature of the gas in $A$ is $30 K$ , then the rise in temperature of the gas in $B$ is ..... $K$
→Figure shows a boy on a horizontal platform $A$ on a smooth horizontal surface, holding a rope attached to a box $B$ . Boy pulls the rope with a constant force of $50\ N$ . (boy does not slip over the platform). The combined mass of platform $A$ and boy is $250\ kg$ and that of box $B$ is $500\ kg$ . The velocity of $A$ relative to the box $B$ , $5\ s$ after the boy on $A$ begins to pull the rope, will be ............ $m/s$
→Light of frequency $4v_0$ is incident on the metal of the threshold frequency $v_0$. The maximum kinetic energy of the emitted photoelectrons is
→A block of mass $200\, g$ is kept stationary on a smooth inclined plane by applying a minimum horizontal force $F =\sqrt{ x }N$ as shown in figure. The value of $x =.....$
→Statement $-1$ : When a magnet is made to fall freely through a closed coil, its acceleration is always less than acceleration due to gravity.
→and
Statement $-2$ : Current induced in the coil opposes the motion of the magnet, as per Lenz's law.
A boat having a length of $3\,metre$ and breadth $2\,metre$ is floating on a lake. The boat sinks by one cm when a man gets on it. Mass of the man is ....... $kg$
→A flat coil of $500$ turns, each of area $50 \,cm ^2$, rotates in a uniform magnetic field of $0.14 \,Wb / m ^2$ about an axis normal to the field at an angular speed of $150 \,rad / s$. The coil has a resistance of $5 \,\Omega$. The induced $e.m.f.$ is applied to an external resistance of $10 \,\Omega$. The peak current through the resistance is .......... $A$
→If the value of $‘g’$ acceleration due to gravity, at earth surface is $10\,m/{s^2}$, its value in $m/{s^2}$ at the centre of the earth, which is assumed to be a sphere of radius ‘R’ metre and uniform mass density is
→Three equal capacitors, each with capacitance $C$ are connected as shown in figure. Then the equivalent capacitance between $A$ and $B$ is
→A solid sphere of radius $R$ is charged uniformly. At what distance from its surface is the electrostatic potential half of the potential at the centre?
→