What is the difference between center of mass and center of gravity?
2 answers:
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The force responsible for sliding the block down along the ramp is the component of the weight parallel to the ramp.
The weight of the block is
The component of the weight parallel to the ramp is
And now we can find the acceleration of the box by using Newton's second law:
So, the correct answer is
-4.9 m/s2
(the negative just means we have taken "upward along the ramp" as positive direction)
Answer:
Since the particle 1 and 2 are on the x-axis, the 3rd particle should also be on the x-axis in order the net force on it to be zero.
Let's denote the distance between particles 1 and 3 as x. Therefore the distance between particles 2 and 3 is (0.1 - x), since the distance between 1 and 2 is 0.1 m.
Coulomb's Law states the force between charges as
The question asks that , so
We will take the positive root:
away from the first particle.
Explanation:
Since Fig. 21-25 is not given in the question, the exact locations are not known. However, the location of the third particle is found to be 0.036 m away from the first particle and the third particle is located between the particles 1 and 2.