Recent content by vinci

I think this all raises more questions than there already were. I am going to go with 'gravity' while answering this and hope they just don't bring this question in the exam.(Too many confusions, specifically because of this part 'When the truck is at the position shown there is no reaction...

@PeroK If I imagine the two cases in both of them the horizontal motion will be unaffected by gravity (i am assuming there is no air resistance), the truck will vertically accelerate downwards at the same time until it hits the ground. In case a) where it is moving too fast the point...

I assume, the truck will go straight for a while because of inertia. So how exactly am I going to put this into words? "It is gravity that keeps the truck in it's circular motion and inertia that drives it away from the circle. The net sum of these two forces is what keeps the truck in circular...

[Moderator's Note: Thread moved from forum General Physics hence no formatting template] I am trying to study Circular Motion for my exams and I'm kind of unsure about one question. The question asks what's keeping the truck in circular motion. It has to be gravity I know, but gravity being...

What still confuses me is this "n order to get more current from the same battery, you would need to reduce the external resistance" Less resistance is equal to a smaller potential drop across the resistor, no? How would a smaller potential drop yield a larger current when the two are directly...

To start with this is not a numerical but merely a basic concept I fail to understand. I will quote what the CIE book says "Consider a battery of emf 3 V and of internal resistacne 1 ohm. The maximum current that can be drawn from this battery is I=e/r = 3/1=3 A The terminal p.d of the battery...

@Ahmer: cosTHEETA calculates the horizontal component of the force. I don't believe that's the right answer.

So I should only be concerned with the motion on y-axis or the one due to 500N force and the distance covered by it is 40M making the answer 20000NM, right? Why has the questioniare even mentioned the two other distances then/

The crane exerts a force in two directions. An upward one and then a horizontal one. Am I right?

Homework Statement A crane lifts its 500N load to the top of the building from A to B. Distances are shown on the diagram. Calculate how much work is done by the crane Known variables: AB= displacement= 50m AC=horizontal distance=30m BC=vertical distance=40m 2. Homework Equations Work...

Thanks, everybody. That's a relief. Secondly, I'll make sure to mention the units from here on.

Homework Statement A metal rod of length 90cm has a disc of radius 24cm fixed rigidly at its centre(refer to picture attached). The assembly is pivoted at it's centre. Two forces, each of magnitude 30N, are applied normal to the rod at each end so as to produce a turning effect on rod. A rope...

There are four of them. Apologies, should've added line spaces too.

I really have nothing much to introduce myself with, I don't think I've accomplished anything worth mentioning so far. A 19 YO high school failure and a self learned web developer(actually started with c++ but meh). I have worked as a ghost writer for some least visited blogs, and freelanced as...