Recent content by fisica15

You're right, let's consider it on the mass

That's what I need! But I have some doubt on how oscillation will affect those forces (Ps: i applied the forces on the hook, because this is the point where I need to have the resultant)

ok, so how would you do that problem? let me know...

As a first analysis it can be ok, but then I need to analyze graphically something more complex

ok, let's try with the second one

like an helicoidal movement?

let's avoid to consider the air resistance and let's consider the case in which we have oscillation and horizontal acceleration

I don't understand if you're talking about the mass of the hook (that i didn't considered honestly) or if you're referring to the mass M moved by all the system. If we start at a basic level with an horizontal movement at a constant speed and no oscillation, i would say that the weight force...

By the way, I was already considering a massless hook, the weight is given by the mass moved by the hook. Then, i prefer to consider a realistic situation for my work and in fact, in reality you can see that an object moved by a crane tends to oscillate, because the rope, the hook and the mass...

yes, exactly

I know, but when the crane is moving horizontally, then the forces applied on the hook will have different angles i guess and i think there will be also a rotation of the hook

the crane moves the rope up : there's the tension on the rope and the weight of the mass M. The forces are on the axis of the rope, the weight goes down and the tension goes up. This is what i think is true

Ok, so here you can see a scheme of my problem. I need to show graphically the forces that are applied on the hook that sustains the mass M. I have three cases to work on: A) the crane is not moving, only the rope is moving vertically to lift and to lower the weight B) now the crane is moving on...

I have a body moved by a crane hook and I want to represent the forces that act on the body in the case of translation, rotation and roto translation. Can someone help me? Thank you [Moderator's note: moved from a technical forum.]