Ratio of her final kinetic energy to initial kinetic energy

Reference no: EM13665510

A skater spins with an angular speed of 17.7 rad/s with her arms outstretched. She lowers her arms, decreasing her moment of inertia with a factor of 2.9. Ignoring friction on the skates, decide the ratio of her final kinetic energy to her initial kinetic energy.

Reference no: EM13665510

Questions Cloud

Find at what angular velocity does the string tilt down : A student ties a 500 gram rock to a 1.0 meter long string and swings it around her head in a horizontal circle. Find at what angular velocity, in rpm, does the string tilt down at a 10 degree angle

Compute voltage during which electrons must be accelerated : To study the wave nature of electrons, some physics students propose to accelerate a group of electrons during a voltage so that the de Broglie wavelength of the electrons will equal that of light (about 600nm).

Find which scale reading is higher and by how much : A 73.0 kilogram man weighs himself at the North Pole and at the equator. Which scale reading is higher and by how much

Determine are force and acceleration in the same direction : An object under the influence of gravity is thrown straight up in the air, Determine are the force and acceleration in the same direction

Ratio of her final kinetic energy to initial kinetic energy : A skater spins with an angular speed of 17.7 rad/s with her arms outstretched. She lowers her arms, decreasing her moment of inertia with a factor of 2.9. Ignoring friction on the skates, decide the ratio of her final kinetic energy to her initial ki..

Calculate how high does the arrow rise : An archer shoots a 100 g arrow straight up in the air. Calculate how high does the arrow rise assuming the force of air friction on the arrow averages 0.80 Newton during the upward flight

Find what force is necessary to hold it in place : In a high magnetic field experiment, a conducting bar carrying 13.5 kA passes through a 30 centimeter long region containing a 24.0 T magnetic field. find what force is necessary to hold it in place

Obtain what is the magnitude of the magnetic field : A proton moving freely in a circular path perpendicular to a constant magnetic field takes 0.70µs to complete one revolution. Find the magnitude of the magnetic field

Calculate the electrical energy utilized by a household : Calculate the electrical energy utilized by a household whose monthly electrical bill is $44, computed at the rate of $0.07 per kWh. How long could this energy be used to burn ten 12 W light bulbs?

User Account

All Pages