An object of mass m travels along the parabola yequalsx squared with a constant speed of 5 units/sec. What is the force on the

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3 years ago

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An object of mass m travels along the parabola yequalsx squared with a constant speed of 5 units/sec. What is the force on the

object due to its acceleration at left parenthesis 2 Superscript 1 divided by 2 Baseline comma 2 right parenthesis? (Remember Newton's law, Fequalsma.)

Physics

1 answer:

Dmitriy789 [7] · Answer 1 · 2022-04-24T08:45:30+03:00

Explanation:

The object is moving along the parabola y = x² and is at the point (√2, 2). Because the object is changing directions, it has a centripetal acceleration towards the center of the circle of curvature.

First, we need to find the radius of curvature. This is given by the equation:

R = [1 + (y')²]^(³/₂) / |y"|

y' = 2x and y" = 2:

R = [1 + (2x)²]^(³/₂) / |2|

R = (1 + 4x²)^(³/₂) / 2

At x = √2:

R = (1 + 4(√2)²)^(³/₂) / 2

R = (9)^(³/₂) / 2

R = 27 / 2

R = 13.5

So the centripetal force is:

F = m v² / r