Angular momentum of the particle rotating with a central force is constant due to
Constant Force
Constant linear momentum
Zero Torque
Zero Torque
C.
Zero Torque
Four point masses, each of value m, are placed at the corners of a square ABCD of side A. The moment of inertia through A and parallel to BD is
m
2m
√m
√m
D.
√m
I = 2m (
A force of acts on O, the origin of the coordinate system. The torque about the point (1, −1) is
C.
The rms value of the electric field of the light coming from the Sun is 720 N/C. The average total energy density of the electromagnetic wave is
3.3 × 10−3 J/m3
4.58 × 10−6 J/m3
6.37 × 10−9 J/m3
6.37 × 10−9 J/m3
B.
4.58 × 10−6 J/m3