The electroscope is an apparatus used to detect electric charge. The electroscope consists of a plate, a support and a free to r
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When the spring is stretched by 15.2 cm = 0.152 m, the spring exerts a restorative force with magnitude (due to Hooke's law)
where is the spring constant. Solve for
.
The amount of work required to stretch or compress a spring by from equilibrium length is
Then the work needed to stretch the spring by 15.2 cm is
and by 15.2 + 13.7 = 28.9 cm is
so the work needed to stretch from 15.2 cm to 28.9 cm from equilibrium is
Answer:
Magnitude of C=
Angle=arctan(Ay+By/Ax+Bx)
Explanation:
Let
A = Axi + Ayj
B = Bxi + Byj
where i and j are unit vectors in the direction of x and y axes respectively.
C=A+B
C = (Ax + Bx)i + (Ay + By)j
The magnitude of vector C can be calculated by adding the square of magnitude of its componets and then taking sqaure root.
Magnitude of C=
And the angle will be
Angle=arctan(Ay+By/Ax+Bx)