A uniform beam weighing 1 N is used as a metre rule. The beam is supported by a pivot at the 30 cm mark. A 12 N weight is hung at the 0 cm mark and a 2 N weight is hung at the
60 cm mark as shown in Figure 5.19.
50 cm 60 cm
100 cm
Ост
► Figure 5.19
30 cm
mark
1N
2 N
12 N
w
What is the weight W of a mass hung at the 100 cm mark in order to balance the beam?
Please help!

plz submit image than solve

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers