Recent content by iMAGICIALoTV

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    Help Needed: Solving Ramp Problem with Inclined Wedge and Block

    A block of mass 0.6 kg rests on the inclined surface of a wedge of mass 1.8 kg. The wedge is acted upon by a horizontal force F and slides on a frictionless surface. The acceleration of gravity is 9.81 m/s If the coefficient of static friction between the wedge and the block is 1 and the...
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    Help Needed: Force Equations for Horizontal Component of Bigger Block

    Somebody? Help me, please?
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    Help Needed: Force Equations for Horizontal Component of Bigger Block

    Homework Statement Homework Equations I don't know if I set the equation for horizontal component of the bigger block correctly: \huge{\Sigma F_{x_1} = F_a - (f_k + N_2) = ma} If this is true then it seems that there is not enough given information to find F_a. Are there some other way...
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    Calculate Cliff Height: Free-Fall Problem with Rock Dropped from a Cliff

    Why t+1, though?
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    Calculate Cliff Height: Free-Fall Problem with Rock Dropped from a Cliff

    A rock dropped from a cliff falls one-third of its total distance to the ground in the last second of its fall. How high is the cliff? I'm not asking for answer, I know the Physics Forum rules, but I am totally unsure where to start. I guess I have to use the equation d = Vot + at²/2 ...
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    FInd the height where two object pass each other.

    How did you get 42 - 6t - gt²/2? Shouldn't it be 42 + 6t - gt²/2? I don't understand.
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    FInd the height where two object pass each other.

    An object is thrown downward with an initial speed of 6 m/s from a height of 42 m above the ground. At the same instant, a second object is propelled vertically up from ground level with a speed of 55 m/s. At what height above the ground will the two objects pass each other? The acceleration...
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    What Is the Maximum Height Reached by a Falling Brick?

    A load of bricks is being lifted by a crane at a velocity of 5 m/s when one brick falls off 6m above the ground. What is the greatest height the brick reaches above the ground? How do you solve it? The attempt at a solution Since it fell of 6 meters above the ground, the greatest height...
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    High School Can Velocity Be Negative When Acceleration Is Positive?

    Is it possible for velocity to be negative while the acceleration is positive? If so, then how is it possible?
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    Second Derivative of Square Root Equation

    How did you get \frac{dy}{dx} = -\frac{\sqrt{y}}{\sqrt{x}}?
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    High School What is the correct way to express half of two plus two?

    I believe it's A, but Number Nine's right. We have no way to be sure...