Recent content by iMAGICIALoTV

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...

Somebody? Help me, please?

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...

Why t+1, though?

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 ...

How did you get 42 - 6t - gt²/2? Shouldn't it be 42 + 6t - gt²/2? I don't understand.

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...

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...

Is it possible for velocity to be negative while the acceleration is positive? If so, then how is it possible?

How did you get \frac{dy}{dx} = -\frac{\sqrt{y}}{\sqrt{x}}?

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