A couple of mistakes.DanielGuh said:
Ohh I got it, the unit should be change, and when I use sin I find the answer is 4.51m. However, I don't know why do we use sin instead of cos.haruspex said:
Why did you use ##\cos## in the first place?DanielGuh said:
Sin is for vertical axis, cos for horizontal.DanielGuh said:
That doesn't sound right.DeBangis21 said:
It doesn't always work like that. In this problem, the direction is the slope's - not vertical or horizontal.DeBangis21 said:
A useful check is to think about the ##\theta=0## case. No downslope force, so you want the function that gives 0 at 0.DanielGuh said:
This video helps a lot, thanks!Steve4Physics said:
Coulomb's Law is a fundamental law of electrostatics that describes the force between two charged particles. It states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
In this scenario, the charge and the mass are both considered to be point particles, and the force between them can be calculated using Coulomb's Law. The charge will exert an electrostatic force on the mass, causing it to repel and move along the incline.
The formula is F = (k * q * m) / d^2, where F is the force, k is the Coulomb's constant (8.99 x 10^9 Nm^2/C^2), q is the charge of the particle, m is the mass of the particle, and d is the distance between them.
According to Coulomb's Law, the force between two particles is inversely proportional to the square of the distance between them. This means that as the distance increases, the force decreases, and vice versa.
The frictionless incline ensures that there are no other external forces acting on the mass besides the electrostatic force from the charge. This allows for a more accurate calculation of the force between the charge and the mass using Coulomb's Law.