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Classical mechanics
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Questions (774)
A particle moves in a central potential U(r) = −k/re^−r/ξ (screened potential, with k > 0 and ξ > 0). For what values of
1 answer
asked by
Austin
268 views
What is the proof that intensity is proportional to amplitude squared? Does it come from the fact that total energy = 1/2kx^2 ?
1 answer
asked by
Jackie
155 views
I don't understand this: Russian ice skater, Alina Zagitova, spins her way to projected Gold in the 2018 Olympics. During one
2 answers
asked by
Mariam
836 views
mass 0.3kg is moving on the ground at speed 4m/s towards ball B which is at rest on the ground and has mass of 0.8kg. When A
2 answers
asked by
Amy
535 views
As shown in the figure below, two masses m1 = 4.40 kg and m2 which has a mass 80.0% that of m1, are attached to a cord of
1 answer
asked by
Young
499 views
A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?
2 answers
asked by
Randy
741 views
10.1 Three uniform spheres with masses m1 = 6.0 kg, m2 = 2.0 kg ,
and m3 = 4.0 kg are fixed at the positions shown in the
1 answer
asked by
Sarah
719 views
A bullet is fired with an initial speed of 200 m/s. If a target is 500ft away, at what angle should the rifle be raised in order
1 answer
asked by
John
420 views
Suppose the speed of sound is c, and gravity is g. If you throw a rock from an initial height h0 and with an initial velocity v0
4 answers
asked by
Anonymous
1,145 views
You are designing a curve in a highway. If the turn is too sharp (the radius of curvature is too small), then cars may lose
2 answers
asked by
Annabelle
516 views
-the coefficient of static friction between the flat bed of the truck and the box is us 0.3. Determine the minimum stopping
2 answers
asked by
mostafa
546 views
An object with Fnet = 0 moving at a constant velocity. Draw a FBD diagram.
I don't understand how is this possible.
2 answers
asked by
Next
484 views
A golf ball of mass 125 g hits a billiards ball of mass 172.5 g that is initially at rest. After the collision, the golf ball
2 answers
asked by
David
1,163 views
determine the displacement vector that must be added to the displacement) 25-16) m to give a displacement of 7m pointing in the
5 answers
asked by
mumbi
731 views
an electron of mass 9.11*10^-31 kg has an initial speed of 4.00*10^5 m/s. it travels in a straight line and its speed increases
2 answers
asked by
neyra
494 views
Find the differential equation of motion for a gravitational pendulum of mass m and length a by using the fact that the torque
1 answer
asked by
Daniel
475 views
An object of mass m can slide without friction on a tabletop. A horizontal string tied to the object passes through a
2 answers
asked by
johnny
538 views
Find out if the force is conservative or non-conservative if the work done is
W = x^2.y - x.z^3 - z.
6 answers
asked by
jzee11
429 views
Show that the angular momentum vector(L)=vector(r)×vector(p) vector is an axial vector
1 answer
asked by
gourav
494 views
A sphere of uniform density d1 has a radius R. It also consists of a hollow sphere of radius r. the sphere floats slightly on
1 answer
asked by
Anonymous
497 views
Mass points M and m are kept at the vertices of an equilateral triangle
whose sides are of length a. 1. Find the distance between
5 answers
asked by
Saraf
523 views
An autographed baseball rolls off a 0.5m high desk and strikes the floor 0.4m away . How fast was the ball traveling when it hit
2 answers
asked by
Denise
554 views
I saw this problem half answered already but the answers I got were wrong
A 238U nucleus is moving in the x-direction at
2 answers
asked by
James T.
593 views
What is the impulse that must be applied to stop a 90-kilogram running back on a field at a speed of 4.5 meters per second.
1 answer
asked by
mya
454 views
It looks very complicated and I do not know how to even start. Any help would be immensely appreciated.
A pendulum has a mass, m,
2 answers
asked by
Anonymous
562 views
Show that the motion of a particle in a central force field is always confined to a plane.
2 answers
asked by
manisha
501 views
We did not find any results for 'a ball is projected vertically up with an initial speed of 20m/sec and acceleration due to
1 answer
asked by
dipu
441 views
Two small pith balls, each of mass m = 17.4 g, are suspended from the ceiling of the physics lab by 1.2 m long fine strings and
1 answer
asked by
Bryan
521 views
A rope suspended from a ceiling supports an object of weight W at its opposite end. Another rope tied to the first at the middle
2 answers
asked by
samson
524 views
a point mass starts moving in a straight line with a constant acceleration a .at a time t from beginning of motion ,the
2 answers
asked by
kinematics
690 views
Find the moment of inertia about a diameter of s spherical shell of uniform density, D, bounded by two concentric spheres of
2 answers
asked by
E
627 views
A particle is attached to point O from A by the force F=-k/x3. If x=x0 and v=0 when t=0, determine velocity and acceleration as
1 answer
asked by
Dynamics Problems
451 views
if a 10kg block with a velocity of 10m/s collide with a stationary block of 5kg , after collission the two blocks move stick
1 answer
asked by
Anonymous
463 views
Newtons law of gravity states that the gravitational attraction F between two bodies is proportional
to 1 over the square of the
4 answers
asked by
Tony
447 views
Two electrons start at rest with a seperation of 5e-12 metres. Once released, the electrons accerelate away from each other.
2 answers
asked by
Tristan
538 views
The escape velocity of planet earth is 11.2 km/s. At what temperature would helium atoms be able to escape the earth's
2 answers
asked by
tricia
554 views
Which law of newton is F = ma
3 answers
asked by
:P
21 views
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.60 104 m/s, and the radius of the
2 answers
asked by
Hope
645 views
On a spacecraft, two engines are turned on for 910 s at a moment when the velocity of the craft has x and y components of v0x =
1 answer
asked by
Anonymous
736 views
A pendulum of mass m= 0.9 kg and length l=1 m is hanging from the ceiling. The massless string of the pendulum is attached at
2 answers
asked by
Anonimus
606 views
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the
2 answers
asked by
Briggs
480 views
Hi Enjoy, Thanks. I got the acceleration right and the Force wrong. Need help on Question 2.
6 answers
asked by
Mets
316 views
A particle of mass m moves in a x-y plane. the co-ordinates of the particle at any instant are given by x=acos(wt) & y=bsin(wt)
1 answer
asked by
vinod
487 views
What is the ratio of the spin angular momentum of the Earth and its orbital angular momentum about the Sun. The mean radius of
1 answer
asked by
koka
420 views
A ladder leaning against a wall is falling. The ladder is of length, L, and at this instant the ladder is at an angle,
2 answers
asked by
Joldox
991 views
I am doing the monkey and hunter question, and I need to find out what the minimum speed the bullet has to be..
The variables I
3 answers
asked by
Jennifer
433 views
An insulating sphere of mass m and positive charge q is attached to a spring with length h and spring constant k_s and is at
1 answer
asked by
nisha
425 views
I'm not really sure how to use the algebra to prove the monkey shouldn't have dropped. Obviously if the hunter aimed the gun
10 answers
asked by
Oscar
573 views
An instrument-carrying projectile of mass m1 accidentally explodes at the top of its trajectory. The horizontal distance between
2 answers
asked by
Anonymous
590 views
A small sphere of mass m and charge +q with zero velocity falls under the influence of gravity (acceleration = g from height h
1 answer
asked by
rosa
489 views
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Parent Categories (4)
Dynamics
Kinematics
Mechanics
Physics