Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [physics]

Questions on the mathematics required to solve problems in physics. For questions from the field of mathematical physics use (mathematical-physics) tag instead.

This tag is for questions on the mathematics required to solve problems in physics and should not be confused with those on physics concepts. Pure physics questions should go in the Physics Stack Exchange. For questions in the field of mathematical physics, please use the tag instead.

5951 questions
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Finding the time to cover some distance

My turn : From the given information we get the position vector of the walker is $6i + 8j$ Now the party is moving with horizontal speed $5 km h^{-1}$ Which means it velocity is $5i$ So it will not reach the walker , does the "horizontal" means…
Hussien Mohamed
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Trajectory - Calculate range and flight time if initial height is not zero

How do you calculate the Range and Flight Time of a trajectory if the initial height is greater than zero (assuming you're in a vacuum)? The regular formulas I come across don't take initial height into account. Below are the regular…
XSapien
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Conductor bar of mass

A conductor bar of mass m is thrown to the right with velocity $\vec {v} _0 $ over a pair of parallel and metallic rails separated by a distance L, as illustrated in the figure below. The rails are supported in a horizontal plane, have their left…
Lambert macuse
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Spring constant $K$

A mass $m_1$ with initial velocity $V_0$ collides with a spring attached to mass $m_2$ initially resting on a frictionless surface according to the figure below. Considering the spring constant $K$ and the negligible mass, do you ask if: a)…
Lambert macuse
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Force to tension strings

The graph shows a block of mass mkg that is at rest. Determine the strength modulus with which the rope 3 must be pulled so that the other two ropes are tight. (Consider $θ = 30º; g = 10m / s²$) answer: 40N The part F = 80N I found, but why F =…
trombho
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Knowing that during the last second of the fall

A small sphere was abandoned from rest from a height of $ h $ relative to the ground at a location where $ g = 10 m / s ^ 2 $. Knowing that during the last second of the fall, the sphere traveled a distance of $ 35 $ m, determine: a) the speed with…
Sullo
  • 613
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A driver approaches a traffic light

A driver approaches a traffic light, which is green with speed $ v_0 $ when it turns yellow. a) If the driver's reaction occurs within temp $ T $, during which he decides to stop and apply the brake foot, and if the maximum brake deceleration is $ a…
Sullo
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Help with solar energy math

At a temperature of 20 degrees, a solar cell has a maximum power of 1000W. If you increase the temperature by 10 degrees and assume that the radiation is the same, what will the maximum effect of the solar cell be? I'm supposed to use this formulas,…
Mathomat55
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An explosive of mass 6kg is projected at 35m/s at the angle 60 with the horizontal. .

At the top of its flight, it explodes, breaking into two parts, one of which has twice the mass of the other. The two particles land simultaneously. The lighter fragment lands back at launch point. Where does the other fragment land? What is the…
Aditya
  • 6,191
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A block on a rough horizontal surface. Condition for the block to move along the surface

It is inclined to the vertical at an angle $\theta$. The coefficient of friction is $u$? The block can be pushed along the surface only if_______ Clearly, the total normal force on the block will be $$N=Mg+Mg\cos\theta$$Then friction would be…
Aditya
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Find force F applied to two stacked blocks on verge of sliding

The force is just large enough to make it on the verge of sliding out from between the upper block and table. Determine the force F at this instant and common acceleration of each block $f_s$ max for the lower block and ground is $100N$ while…
Aditya
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Find the acceleration of each block and tensions $T_1$ and $T_2$

I actually don’t know how to begin in the first place. The first thought that went through mu head was to consider the 2kg and 3kg and the pulley as a singular system, but that isn’t possible because they’d have different accelerations. I could…
Aditya
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Physics: Columbs Law Over a Distance

I have a superposition of charges problem, and the following details are important to problem. I have a charge $q_1=6\ \mathrm{\mu C}$ located at the origin $(0,0)$, in a Cartesian coordinate system in which the metrics of the set are in meters. I…
Jose M Serra
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What is the resultant of this vector war?

Fido pulls with a force of 525 Newtons at 160 degrees while Spot pulls with a force of 175 Newtons at 65 degrees and Rover pulls with a force of 825 Newtons at 315 degrees. What is the resultant force and degree?
Dylan
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What is the angle measurement of this vector?

A force of 240 Newtons acts at 30 degrees. Another force of 500 Newton acts at the same point at 240 degrees. Find the resultant vector and its magnitude and angle. I got the magnitude using the pythagorean theorem. Now I don't know the degree.
Dylan
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