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Velocity

Whirling stone: Maximum velocity

A man whirls a stone round his head on the end of a string 2 m long. Can the string be in a horizontal plane ? If the stone has a mass of 200g and the string will break if the tension exceeds 4 Newton, what is the smallest angle the string can make with the horizontal ? What is then the speed of the stone ? Take g = 10m/s^2

Momentum and magnitude of mass; impulse; force

A constant force acts on a 2kg mass for 3sec while the velocity changes from 4m/sec to 10m/sec. a. Find the initial and final momentum of the mass. b. Find the change in momentum and the impulse given to the mass. c. Find the magnitude of the force.

Submarine A detects sound from sub B. Find the velocity of sub B.

Submarine A detects sound from sub B. Given the frequency received and knowing that emitted, find the velocity of sub B. Submarine A, with velocity 21 m/sec, receives from directly behind it, the sound with frequency 266 cy/sec, from submarine B which is known to emit sound at 265 cy/sec. The two submarines are 1800 meters

Object of mass 2M moving with SHM: Find period, velocity, amplitude

SEE ATTACHMENT #1 for diagram showing parameters, and general equations of SHM. Driven by a spring with force constant k, on a horizontal frictionless table, two joined masses, each mass M, is executing SHM between xm and -xm. Known parameter values are: M= 2 kg, k= 64 nt/m, xm= .25 m, PART a. Find the period, and max

Velocity of a falling object is measured.

A construction worker on a new high-rise building drops a wrench and it falls 78.4 m to the ground. How fast is it moving when it hits, assuming no air resistance? Use g = 9.8 m/s2.

Apply conservation of angular momentum to find the final angular velocity.

SEE ATTACHMENT #1 for diagram of before and after rearrangement. A framework consists of two thin, uniform bars of mass M= 12 kg, length L= 3 m, and two thin, uniform bars of mass m= 6 kg, length D= 3 m, forming a rectangle of length L width D. It is rotating in space with initial angular velocity Wo= 18 rad/sec. At some ins

Bernoulli's equation determines ejection velocity of liquid from a tank.

Bernoulli's equation determines ejection velocity of liquid from a tank. Motion equations find x,y coordinates of impact of the liquid. A large tank contains non-viscous liquid whose depth is H. A bullet punches a small hole of radius r in the vertical side of the tank at a point which is distance h below the liquid surface.

Bernoulli's equation of continuity in liquid flow from large to smaller pipe

See attachment #1 for diagram. Bernoulli's equation and equation of continuity in liquid flow from large to smaller pipe A sprinkler supply pipe pumps water upward from a larger pipe, diameter d2=.28 m, to a smaller pipe, diameter d1= .12 m. The velocity of the water through the smaller pipe is v1= 6 m/sec. a. find the

Dynamics and Velocity

Please provide me with a complete/comprehensive solution in word or in text to the attached problems.

Physics: Speakers A & B are vibrating in phase; what is the distance?

Speakers A and B are vibrating in phase. They are directly facing each other, are 7.80 m apart, and are eack playing a 73.0-Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interference occurs. What are the distance of these three points from speaker A?

Finding the ratio between two velocities down a ramp.

A marble and a cube are placed at the top of a ramp. Starting from rest at the same height, the marble rolls and the cube slides (no kinetic friction) down the ramp. Find the ratio of the center-of-mass speed of the cube to the center-of-mass speed of the marble at the bottom of the ramp.

Speed of a bullet measured using ballistic pendulum !

A simple way to measure the speed of a bullet is with a ballistic pendulum. This consists of a wooden block mass, M, into which the bullet mass, m, is shot. The block is suspended from cables of length, l, and the impact of the bullet causes it to swing through a maximum angle, A. The initial speed of the bullet is v. a) How

Mechanics: moment of inertia, projectiles

1)a.A grind stone of 0.1m thick,1m of diameter and a relative density of 2.53 find-moment of inertia+ radius of gyration. b)A gun is fired at a target 12km away at an angle of 35deg and hits target.How long is the projectile in the air and what's it's velocity? need complete step by step answer,thanks..

Instantaneous Velocity Problem

The position of a particle moving on an x axis is given by: x=7.8 + 9.2t - 2.1t^3 with x in meters and t in seconds. What is its velocity at t=3.5s? Is velocity constant or changing?

Physics Problems Kinematics, Acceleration

Show all steps in computation. 1) A VW RAbbit can go from rest to 80.5 km/h (50.0 mi/h) in a modest 8.20 s. How long will it take to speed from 48.3 km/h to 64.4 km/h, along a straight run, if the average acceleration is the same as before? 2)During a takeoff a small plane has an average tangential acceleration of 5.0 m/s^2

Working with integration

The velocity of a particle moving in a straight line is given by v=3t^2 + 2t, Find an expression for the displacement at time, t. If the initial displacement is 1m, find an expression for the constant of integration. Hence determine the displacement after a time period of 2s has elapsed.