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Classical Mechanics
2 particles of masses 'M' and 'm',seperated by an infinite distance are released from rest.they move under mutual gravitational attraction.then the velocity of approach at an instant at which mutual separation id 'd' is
Classical Mechanics
A 5 kg shot putt is thrown with an average force of 500 N applied for a period of 0.3 s. What is the magnitude of the impulse?
Classical Mechanics
A box of mass m is pushed horizontally on a rough floor with an initial speed of 2 ms−1.
The coefficient of kinetic friction between the surface and the box is µk = 0.1. Calculate
the distance the box will move before stopping.
The coefficient of kinetic friction between the surface and the box is µk = 0.1. Calculate
the distance the box will move before stopping.
Classical Mechanics
A horizontal disk is rotating counter-clockwise about its axis of symmetry at 14 rps. Its
rotational inertia with respect to its axis of symmetry is 8 kg m2
. A second disk, of
rotational inertia 2 kg m2
with respect to its axis of symmetry, rotating clockwise about
the same axis at 7 rps, is dropped on top of the first disk. The two disks stick together
and rotate as one about their common axis of symmetry. What is the angular velocity of
the system?
rotational inertia with respect to its axis of symmetry is 8 kg m2
. A second disk, of
rotational inertia 2 kg m2
with respect to its axis of symmetry, rotating clockwise about
the same axis at 7 rps, is dropped on top of the first disk. The two disks stick together
and rotate as one about their common axis of symmetry. What is the angular velocity of
the system?
Classical Mechanics
Hi ...
I have some questions a bout the yoyo and I hope you to help me ...
1- what are the factors that affect the spinning time of the yoyo and why the spinning time different from yoyo to other and is there any situation where the yoyo spin for ever ?
2- what are the factors that affect the rotation speed of the yoyo and is the force that I throwing the yoyo with affect the rotation speed ?
3- what is the time that the yoyo take to get to the end of the string in case of free fall and the case of throwing the yoyo with force ?
4- does the yoyo rotate in uniform circular motion and if not is there any situation where the yoyo rotate like that ?
I hope you to give me specific law for each question and thank you a lot
I have some questions a bout the yoyo and I hope you to help me ...
1- what are the factors that affect the spinning time of the yoyo and why the spinning time different from yoyo to other and is there any situation where the yoyo spin for ever ?
2- what are the factors that affect the rotation speed of the yoyo and is the force that I throwing the yoyo with affect the rotation speed ?
3- what is the time that the yoyo take to get to the end of the string in case of free fall and the case of throwing the yoyo with force ?
4- does the yoyo rotate in uniform circular motion and if not is there any situation where the yoyo rotate like that ?
I hope you to give me specific law for each question and thank you a lot
Classical Mechanics
Review a system of accelerated particles ( eg accelerators , synchrotron ). The power of this particle is influenced by the speed of particles moving at speeds approaching the speed of light c , the acceleration of the particles and the particles are large cargo loads ( q ) .By using dimensional analysis of mathematical equations that may seek the power connections between the variables involved.
Classical Mechanics
a 1200-kg truck accelerates from rest to a speed of 25 m/s west. calculate the change in momentum of the truck. What impulse (magnitude and direction) caused this change in momentum?
Classical Mechanics
The spring-flex exercise system consists of a spring with one end fixed and a handle on the other end. The idea is that you exercise your muscles by stretching the spring from its natural length, which is 31 cm. If a 190 Newton force is required to keep the spring stretched to a length of 44 cm, how much work is required to stretch it from 51 cm to 67 cm?
Classical Mechanics
One 3.0 kg paint bucket is hanging by a massless cord from another 3.0 kg paint bucket, also hanging by a massless cord(a) If the buckets are at rest, what is the tension in each cord (upper and lower)?(b) If the two buckets are pulled upward with an acceleration of 1.80 m/s2 by the upper cord, calculate the tension in each cord( upper and lower).
Classical Mechanics
A couple consist of a pair of forces which are equal in magnitude but oppositely directed, the lines of action of the forces being parallel yet not coincident. A couple tends to rotate (but not translate) a rigid body on which it acts. Show that any system of forces acting on the body is equivalent to a single force acting on arbitrary point plus a couple !
