In a lab experiment a light flexible string is wrapped around a solid cylinder with mass m = 9.50 kg and radius r. the cylinder rotates with negligible friction about a stationary horizontal axis. a mass m = 3.00kg is tied at the free end of the string and release and the mass moves downward. find the magnitude of the acceleration of the object of mass m.

Explanation:

Given

Mass

Net Force is equivalent to

with tension T in the string    

For mass

For cylinder

I for solid cylinder is

thus

Substitute the value of T we get

your answer is c! hope this : )

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