1
COMEDK 2024 Evening Shift
+1
-0

Action and reaction can never balance out because

A
They are unequal in magnitudes
B
Though they are equal in magnitude and opposite in direction they act on different bodies.
C
They are equal in magnitude but not opposite always.
D
They are unequal in magnitudes even though opposite in direction
2
COMEDK 2024 Morning Shift
+1
-0

A stone of mass $$2 \mathrm{~kg}$$ is hung from the ceiling of the room using two strings. If the strings make an angle $$60^{\circ}$$ and $$30^{\circ}$$ respectively with the horizontal surface of the roof then the tension on the longer string is : $$g=10 \mathrm{~ms}^{-2}$$

A
$$\frac{\sqrt{3}}{2} \mathrm{~N}$$
B
$$10 \sqrt{3} \mathrm{~N}$$
C
$$10 \mathrm{~N}$$
D
$$\sqrt{3} \mathrm{~N}$$
3
COMEDK 2023 Evening Shift
+1
-0

If the resultant of all external forces acting on a system of particles is zero, then from an inertial frame one can surely say that

A
Linear momentum of the system does not change in time
B
Kinetic energy of the system does not change in time.
C
Potential energy of the system does not change in time.
D
Angular momentum of the system does not change in time
4
COMEDK 2023 Evening Shift
+1
-0

$$\mathrm{F}_{\mathrm{A}}, \mathrm{F}_{\mathrm{B}}$$ and $$\mathrm{F}_{\mathrm{C}}$$ are three forces acting at point $$\mathrm{P}$$ as shown in figure. The whole system is in equilibrium state. The magnitude of $$\mathrm{F}_{\mathrm{A}}$$ is

A
100 N
B
83.3 N
C
73.3 N
D
89.6 N
EXAM MAP
Medical
NEET