+34 votes
in Velocity physics by
edited by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
+2 votes
by

To find the acceleration of the particle at a specific point, we need to determine the derivative of the velocity function with respect to time. However, in this case, we are given the velocity function as a function of displacement (x) instead of time.

To resolve this, we can make use of the chain rule to express the velocity function in terms of time. We know that velocity (v) is the derivative of displacement (x) with respect to time (t), so we have:

v = dx/dt

We can rearrange the equation to solve for dt:

dt = dx/v

Now we can differentiate both sides with respect to time (t):

d^2x/dt^2 = d/dt(dx/v)

Using the chain rule, we can express dx/v in terms of x:

d^2x/dt^2 = d/dx(dx/v) * dx/dt

Let's find the derivatives step by step:

First, let's find dx/dt by rearranging the given velocity function:

v = 2x^2 - 3

dx/dt = v

Next, we need to find d/dx(dx/v):

dx/dx = 1 (derivative of x with respect to x is 1)

Now, differentiate dx/v with respect to x:

d/dx(dx/v) = d/dx(1/v * dx)

Using the product rule:

d/dx(1/v * dx) = (1/v) * d/dx(dx) + dx/dx * d/dx(1/v)

Since dx/dx = 1, the equation simplifies to:

d/dx(1/v * dx) = (1/v) * 1 + 1/v * d/dx(dx)

d/dx(1/v * dx) = 1/v + 1/v * d^2x/dx^2

Now, let's substitute these derivatives back into the equation:

d^2x/dt^2 = (1/v + 1/v * d^2x/dx^2) * dx/dt

Since we are interested in finding the acceleration when the displacement is 2 units to the right of the origin, let's substitute x = 2 into the equation:

v = 2(2)^2 - 3 v = 8 - 3 v = 5 m/s

Now we have the velocity at that point. Substituting the values into the equation:

d^2x/dt^2 = (1/5 + 1/5 * d^2x/dx^2) * 5

To find the acceleration, we need the second derivative of displacement with respect to x, d^2x/dx^2. However, it is not provided in the given information. Without this information, we cannot determine the acceleration of the particle when it is 2 units to the right of the origin.

Welcome to Physicsgurus Q&A, where you can ask questions and receive answers from other members of the community.
...