Three identical stars form an equilateral triangle that rotates around the center of the triangle as the stars move in a common circle about the center. Each star has a mass of 1.2x10^28 kg and the...

Three identical stars form an equilateral triangle that rotates around the center of the triangle as the stars move in a common circle about the center. Each star has a mass of 1.2x10^28 kg and the...

A 35,000 kg plane travelling 120 m/s turns in a full circle, the period being 12 s. If the plane maintains constant altitude and velocity, what is the g-force on the pilot?

A ball, attached to a string, moves in a circle. How does the tension of the string change if the speed of the ball is doubled?

A ball hangs from a string, and moves around in a circle. If the speed of the ball was doubled, what would happen to the angle of the string?

An amusement park ride consists of a vertical cylinder that rotates about its axis. The radius of the cylinder is 2.5m and rotates at a constant speed of 15 m/s. What is the minimum coefficient of...

A .25 kg object is attached to a 0.80m string. The object is pulled to a point so that the string makes an angle θ from the vertical. It is then released. At the bottom of the object's path,...

A radio controlled ariplane is suspended from a 0.80 m string. The plane revolves in a circle at a constant speed. The angle the string makes from the vertical is 60º. What is the speed of the plane...

I can't seem to solve this question... A ball is swung in a horizontal circle so that the string makes a 26º with the pole it is attached to. What is the centripetal acceleration?

A small stone rests on the outer edge of a disk which is whirling around at about 28 rotations per minute. The diameter of the disk is .32 m. What is the minimum coefficient of static...

A 1.4 kg ball is connected by two strings to a vertical rotating rod. Each of the strings has a length of 1.5 m and is tied to the rod with a separation of 1.8 m. The ball rotates in a horizontal...

A toy airplane attached to a string flies around in circles. 1. If the speed of the plane was doubled: a) What would happen to the tension in the string b)...

A car is turning on a circular path with a constant speed of 7 m/s. If the car mass is 1200 kg and the coefficient of static friction is between the cars tires and the road .68 what is the radius...

Sir/madam as F=GMM/R2 and by Kepler's third law it is T2 proportion to R3 HENCE can I say F=GMMK/T4\3 where K is arbitrary constant after removing proportionality sign ?

One end of a cord is fixed and a small 0.250-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 1.50 m as shown in the figure below. When θ = 16...

calculate the horizontal inertia of a wheel that has a kinetic energy of 2400J when rotating at 602rev/min.

The County Fair Swing carries the mass of riders and chairs in a circular path in a horizontal plane while suspended by cables or chains. Let's assume that: Each chair with riders is supported...

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.19 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.31 ×...

An athlete whirls an 8.96 kg hammer tied to the end of a 1.3 m chain in a simple horizontal circle where you should ignore any vertical deviations. The hammer moves at the rate of 1.67 rev/s. Assume...

An airplane in a wide “outside” loop can create an apparent zero weight inside the aircraft cabin. Assume the acceleration of gravity is 9.8 m/s2 . Answer in units of m.

An amusement park ride consists of a rotating circular platform 9.07 m in diameter from which 10 kg seats are suspended at the end of 1.22 m massless chains. When the system rotates, the chains make...