Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [classical-mechanics]

For questions on classical mechanics from a mathematical standpoint. This tag should not be the sole tag on a question.

Wikipedia says:

Classical mechanics describes the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies. Besides this, many specializations within the subject deal with gases, liquids, solids, and other specific sub-topics. Classical mechanics provides extremely accurate results as long as the domain of study is restricted to large objects and the speeds involved do not approach the speed of light.

For questions on classical mechanics from a mathematical standpoint. This tag should not be the sole tag on a question. Examples of other tags that might accompany this include , , and .

2097 questions
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Projectile Motion - Overcoming a wall

A gun is fired on a horizontal plane whose bullet passes over a wall of height h, where the plane of trajectory is perpendicular to the wall. Given that the firing velocity is $\sqrt{2ga}$ and the angle of projection cannot exceed $\theta$, where…
Plato
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calculate distance from centre

I have the following question: And i am asked to calculate the distance, d,. However, i am unsure how to do this. I know that in order for the see-saw to be in equilibrium then both sides should have equal weights.
Dan
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Resolving Forces in an inclined plane ( Mechanics )

I have exams after a few days and I'm doing all I can to understand the concept of resolving forces. With hard luck and a few hours of devotion, I acquired basic knowledge on Resolving Forces and was able to solve almost all questions and then this…
Kanchan Sharma
  • 11
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2 answers

Pulley and chain

Find the length of an endless chain which will hang over a. Circular pulley of radius a so that it is in contact with two thirdsof the. Circumference of the pulley? I saw this question in a test. I didn't quite understand the question. Can someone…
user69468
  • 335
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1 answer

Tracking an Object

I have the following situation, two objects A and B, at a distance of x from each other. Both objects have their own 2d heading Ah and Bh and their own speeds As and Bs. I'm trying to determine the rate that A would perceive B to be moving, i.e. if…
Raven
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2 answers

Question about dropping a ball and coefficient of restitution.

If I drop a ball from a height $h$ and the ball rebounds from the floor it will bounce back up to a height of $e^2h$ where $e$ is the coefficient of restitution between the floor and the ball. Why is this the case?
Mechin
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2 answers

Toppling of a triangle, Mechanics.

I am self studying and my exam is coming up in few days. I don't have a teacher to ask, so I decided to try Math.SE. Why isn't the blue angle $30$? The weight force should always be perpendicular to a horizontal ground and the pink angle is $60$, so…
Matthew
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How do you deduce the k in this question?

A box of weight $W$ rests on platform of a lift. When the platform is moving upwards with acceleration $a$, the normal contact force of the platform on the box has magnitute $kW$. When the platform is moving downwards with acceleration $2a$, the…
Laggger246
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CIRCULAR MOTION PROBLEM

I'm having a lot of trouble with QUESTION 14 (shown in the picture). I feel as though my conceptual understanding is off because i dont agree with the answers. The answer sheet is attached. My confusion lies with the line: "Radially: $T \cos \alpha…
Walter James
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4 answers

Question on finding moment of inertia

The question is : "the flat surface of a hemisphere of radius 'r' is cemented to one flat surface of a cylinder of the same radius and of the same material. If the length of the cylinder be 'l' and the total mass be 'm', show that the moment of…
Manoj Dash
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Time of fall of a uniform chain from a peg

Two particles of mass m and 2m are hung from the ends of a uniform chain of mass m and length 2a. The chain is hung from a smooth peg such that its length on the two sides are equal and it is then allowed to fall. Show that the chain leaves the peg…
Sharmi C
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