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23 November, 09:43

What ramp angle would produce an acceleration of 2 m/s2 for a cart rolling down? Assume no friction and that the angle is measured with respect to the horizontal.

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  1. 23 November, 09:54
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    From Newton's second law:

    a = F/mass

    Therefore, acceleration of an object rolling a ramp would be:

    a = g (sin theta) - friction coefficient (g) (sin theta)

    The negative sine is due to the kinetic energy opposing the gravity

    We are given that the friction coefficient is zero, the g is a constant = 9.8 m/sec and the acceleration is 2 m/sec^2

    Substituting in the equation, we get:

    2 = 9.8 sin (theta)

    sin (theta) = 0.20408

    theta = 11.7757 degrees
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