what do u mean by the statement displaces its own volume and displacing its own mass? i have been reading books on it but i still can't grasp the terms. Ok so can i say that when the rock slips off the ice or the ice melts, the rock displaces its own volume as it sinks to the bottom of the water...
Hi.. I understand that if the ice is floating in water, if it melts, the volume of the water will not change as we can apply the law of floatation. But if there is a stone now on top of the ice.. why is it that the water level will decreases when the ice melts. can we like visualise in this way...
Hmm..so if its floating then upthrust will be same if different density of liquid but when its submerged, then upthrust will not be same if different density?
Ok nvm, here is the qn: a ship with uniform cross-sectional area A is floating in the sea. THe ship then unloads its cargo and rise a distance y. Given the density of sea water is Psea water, find the weight of the cargo W in terms of Pseawater, A, Y and g where g is the acceleration due to...
so the positioning of the objects does not determine the magnitude of the upthrust ? cos different density?
Next qn: a lot of people say that under different fluids, the upthrust will change. But wad about for the same object, at first u put it in fresh water of density 1, and then u shift it...
then does weight of an object plays a part? Next, if let's say for the same object, we put in fresh water of Density 1, we have an upthrust of U, if we put this object in sea water of Density 2, will we have a simliar upthrust?
Hi.. Can someone explain when will upthrust change? cos i come across books saying that upthrust will not change when two objects of different density but same material are placed in the same fluid. I also come across that upthrust will not change when same objects are being transferred from...
Hi.. Can someone explain when will upthrust change? cos i come across books saying that upthrust will not change when two objects of different density but same material are placed in the same fluid. I also come across that upthrust will not change when same objects are being transferred from...
Ok thanks. Here is another qn on free body diagram. A crane is made from a uniform rigid boom of length 30m and weight 400N, as shown. The boom is supported at its lower end by a frictionless hinge on the ground. ITs upper end is attached to a support case that is fastened on the ground behind...
anyway if we like draw the net force, wouldn't we be drawing the net force instead of the forces that is acting on it? for free body diagrams we are always drawing the indidivual forces? am i right?
QN: A ladder of weight W rests against a vertical wall. Friction between the ladder and the ground and also between the ladder and the wall prevents the ladder from slipping. Which diagram shows the directions of the forces on the ladder? The answer given was C. So the forces that is shown is...
The qn given was that it has friction between the ladder and the ground and also between the ladder and the wall cos to prevent the ladder from slipping. So if we taken into account of friction then the normal force will not be perpendicular? y is it so?