Recent content by sandyforever

Thanks, but can you please tell me what are the types of forces that Newton's second law takes into consideration?

Homework Statement Recently, I have been wondering whether forces are independent of reference frames(inertial and non inertial). From Newton's law we know that the second law is valid only for inertial frames. But what about the non inertial frames. Let ∑F be the net force on an object in an...

Sorry, I think I still have a confusion. In our previous case the object on the other end accelerates only because of the tension on the string. but how this tension itself is generated. as because tension on the object is due to some force on it acting in the opposite direction. but here no...

got it. thanks!

then if we consider a case where suppose a) two bodies are connected by a string and they are resting on a frictionless surface b) an one end of the string some force is applied while at the other end no external pulling force is applied c) the object in this end is found to be accelerating in...

In the cases when an object is connected to a string at one end, does the string exert tension on the object even when no force is applied at the other end of the string? also if no resistive forces like friction, pull or any other force of that kind acts on the object opposite to the direction...

when we refer to Earth as a reference frame do we mean " surface of the earth", or some coordinate system passing through the centre of the earth.

thanks.

By the way, will you please tell me why in case of considering two masses as one single mass, we neglect the internal forces between them (like tension, action-reaction forces). also, which one is preferable, to consider the masses individually and analyse them or to see consider them as a whole.

yes, you were right. I considered g = 10 m/s^2. It was very silly of me. Anyway, thanks a lot for helping me out.

yeah the solution goes like this: at one end, let us assume the heavier mass to be (12-x) lbs and at the other end the lighter mass be x lbs. the mass of the scale-pan on both the ends is 3 lbs. let us assume the downward direction as positive. let T be the tension on the string and g = 32...

Homework Statement Two scale-pans each of mass 3 lbs are connected by a string passing over a smooth pulley. Show how to divide a mass of 12 lbs between the two scale-pans so that the heavier may descend a distance of 50 ft in the first 5 seconds. Homework Equations F = ma, mg - T = ma...