- #1
Nal101
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Homework Statement
Two thin hollow plastic spheres, about the size of a ping-pong ball with masses (m1=m2 = 2e-3 kg) have been rubbed with wool. Sphere 1 has a charge q1 = -4e-9 C and is at location < 40e-2, -20e-2, 0 > m. Sphere 2 has a charge q2 = -6e-9 C and is at location < -50e-2, 40e-2, 0> m
I've already calculated
Relative Position Vector: <-90e-2, 60e-2, 0>
Distance between q1 and q2: 1.0816653 m
Unit Vector: <-.8320502943, .5547001962, 0>
Magnitude of gravitational force exerted on q2 by q1: 2.29059829e-16
The Electrostatic Force between the two objects: 1.84615e-7
Questions:
1) What is the gravitational force (vector) exerted on q2 by q1?
2) What is the electric force (vector) exerted on q2 by q1?
Homework Equations
Fnet = G * [(m1 * m2)/r^2]
Felec = k * [(q1 * q2)/r^2]
The Attempt at a Solution
For question 1, I took each separate component of the unit vector and divided it by the magnitude.
i.e.
<(-.8320502943 / 2.29059829e-16), (.5547001962 / 2.29059829e-16), 0>
For question 2, I didn't know where to start, assuming I needed the answer to question 1.