The moment of inertia of the empty turntable is 1.5 kg? m2. with a constant torque of 2.5 n? m, the turntableperson system takes 3.0 s to spin from rest to an angular speed of 1.0 rad/s. what is the persons moment of inertia about an axis through her center of mass? ignore friction in the turntable axle.

the moment of inertia of the empty turntable is 1.5 . with a constant torque of 2.5 , the turntableperson system takes 3.0 to spin from rest to an angular speed of 1.0 . what is the persons moment of inertia about an axis through her center of mass? ignore friction in the turntable axle.

2.5 kg? m2
6.0 kg? m2
7.5 kg? m2
9.0 kg? m2

is the persons moment of inertia about an axis through her center of mass.

Option B

Explanation:

Given data are as follows:

moment of inertia of the empty turntable = 1.5

Torque = 2.5 N/m , and

Let the persons moment of inertia about an axis through her center of mass= I

So, Now, from the formula of torque,

So, from the above equation, we can measure the person’s moment of Inertia (I)

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg