The rotation of the earth on its axis causes objects sitting on the equator to have a radial acceleration toward the center of the earth. Part A How short would the earth's day (in hours) have to be in order for the radial acceleration at the equator to be equal to g? Express your answer in hours to two significant figures. ΑΣφ h Submit Request Answer Provide Feedback Next >

The rotation of the earth on its axis causes objects sitting on the equator to have a radial acceleration toward the center of the earth. Part A How short would the earth's day (in hours) have to be in order for the radial acceleration at the equator to be equal to g? Express your answer in hours to two significant figures. ΑΣφ h Submit Request Answer Provide Feedback Next >

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section2.4: Acceleration In Uniform Circular Motion

Problem 2.6CE

See similar textbooks

Similar questions

Check Your Understanding Verify that vector v V obtained in Example 2.14 is indeed a unit vector by computing its magnitude. If the convoy in Example 2.8 was moving across a desert flatland—that is, it the third component of its velocity was zero—what is the unit vector of its direction of motion? Which geographic direction does it represent?
An object moving at constant speed v around a circle of radius rhas an acceleration a directed toward the center of the circle. The SI unit of acceleration is m/s2. If the speed is increased 16.5%, by what percentage does the radial acceleration increase?
An astronaut is rotated in a horizontal centrifuge at a radius of 5.6 m. How many revolutions per minute are required to produce if the centripetal acceleration has a magnitude of 5.3g? ( g is the gravitational acceleration, g=9.80 m/s2. Your result must include one digit after the decimal point. Maximum of 5% of error is accepted in your answer. Take π=3.14)
According to Lunar Laser Ranging experiments the average distance LM from the Earth to the Moon is approximately 3.85 × 10° km. The Moon orbits the Earth and completes one revolution in approximately 27.5 days (a sidereal month). Select the correct expression to calculate the velocity of the Moon. Select one: L'M O a. UM 2nLM O b. UM Тм O c. UM LM Тм 2nLM TM O d. UM
Uniform circular motion involves three key variables: the moving object's speed, the size of the circle, and the time it takes to go around once. A circle's circumference equals its radius multiplied by 2?. The time it takes to complete one full circular "orbit" is called the period. Examples: The period of Earth's orbit around the Sun is about 365 days, and the period of the Moon's orbit around the Earth is roughly 28 days. A circle has the following labels. The label circumference is on the outside of the circle. A dot at the center of the circle is labeled center. A line extending from the center to the edge of the circle is labeled radius. A line extending from one side of the circle, through the radius, and to the other side of the circle is labeled diameter. The following equations are next to the circle: diameter = 2 ✕ radius d = 2r circumference = ? ✕ diameter circumference = 2? ✕ radius c = ?d c = 2?r Let's put these ideas to work. Suppose it takes a horse 20.0 seconds to…
A runner runs around a circular track. He completes one lap at a time of t = 389 s at a constant speed of v = 4.4 m/s.t = 389 sv = 4.4 m/sWhat is the radius, r in meters, of the track? What was the runners centripetal acceleration, ac in m/s2, during the run?
An object moving at constant speed v around a circle of radius r has an acceleration a directed toward the center of the circle. The SI unit of acceleration is m/s2. If the speed is increased 17.5%, by what percentage does the radial acceleration increase?
A ball is traveling at a constant speed (v) of 40.0 m/s in a circle with a radius (r) of 6.0 m. (Hint: The circumference C = 2πr) The centripetal acceleration is ZERO a. False b. True The total distance traveled by the ball is: How long in time does it take for the ball complete one circle? The displacement traveled by the ball is: The average speed of the ball is: The average velocity of the ball is:
USING THE UAM FORMULA WITH ILLUSTRATIONS Find the centripetal acceleration of a person located at Earth's equator with respect to Earth's rotational axis. earth's radius is approximately 6.4 x 10^6 m. Express your answer in m/s.
The formula v = v2.3r models the maximum safe speed, v, in miles per hour, at which a car can travel on a curved road with radius of curvature r, in feet. A highway crew measures the radius of curvature at an exit ramp on a highway as 470 feet. What is the maximum safe speed? For this problem, round your answer DOWN to the nearest whole number. (Think: Why is this type of rounding appropriate for this scenario?) max safe speed =
An object with mass 2.50 kg is moving along a circular path with a radius of 2.20m. At an instant when the speed of the object is equal to 3.50m/s and is changing at a rate of 5.40 m/s^2, calculate the magnitude of the total acceleration (in m/s^2) of the object. Round the answer to 3 decimal places.
Cam Newton of the Carolina Panthers throws a perfect football spiral at 7.9 rev/s. The radius of a pro football is 8.5 cm at the middle of the short side. What is the centripetal acceleration of the laces on the football? (Enter the magnitude in m/s2.)