A fairground ride spins its occupants inside a flying saucer-shaped container. If the horizontal circular path the riders follow has a 4.8 m diameter, if the riders is subjected to a centripetal acceleration 1.3 times that due to gravity, what is the spinning speed in unit of revolutions per minute? Use g = 9.8 m/s2.

You're designing a highway so that the maximum centripetal acceleration on a curve is no more than 1.3 m/s^2. What is the minimum curvature radius to accommodate a 108 km//h maximum speed? This is about r=V^2/a, right? I have to convert km to meters, then hours to min to seconds.  Say the final is (30m/s)^2 /1/3 m/s^2 =692.3 m Does two sig figs mean that 692 is changed to 690 m or something else to get two sig figs?  Please explain?  If the answer is 62.3 then two figs mean 62. If 63.5, then 64.  But 692?

A planet travels in a circular orbit around a star. The radius of the circular orbit is 3.33×1011 m and the orbital period is 1.37 years. What is the magnitude of the centripetal acceleration of the planet, in m/s2?

A car travels at a constant speed around a circular track whose radius is 2.67 km. The car goes once around the track in 285 s. What is the magnitude of the centripetal acceleration of the car?

A fairground ride spins its occupants inside a flying-saucer-shaped vehicle. If the horizontal circular path the riders follow has a radius of 7.5 m, at how many revolutions per minute will the riders be subjected to a centripetal acceleration 1.6 times that due to gravity?

In a circular motion, if an object has a speed of 34.8m/s, and radius of the circular path is 80.2 m, what is the centripetal acceleration in m/s2?

In a laboratory test of tolerance for high acceleration, a pilot is swung in a circle 15.0 m in diameter. It is found that the pilot blacks out when he is spun at 30.6 rpm (rev/min). At what acceleration (in SI units) does the pilot black out? acceleration: 77.01 m/s? Express this acceleration in terms of a multiple of g. acceleration as a multiple of g: 7.858 If you want to decrease the acceleration by 22.0% without changing the diameter of the circle, by what percent must you change the time for the pilot to make one circle? percent of time change:

A fairground ride spins its occupants inside a flying-saucer-shaped vehicle. If the horizontal circular path the riders follow has a radius of 7.5 m, at how many revolutions per minute will the riders be subjected to a centripetal acceleration 1.7 times that due to gravity? f =

A motorcycle, starting from rest, accelerates at 2.07m/s^2 on a circular track with a 215m diameter. What is the elapsed time, in seconds, at which the centripetal acceleration of the motorcycle has the same magnitude as its tangential acceleration?

A planet travels in a circular orbit around a star. The radius of the circular orbit is 3.01×1011 m and the orbital period is 4.27 years.  What is the magnitude of the centripetal acceleration of the planet, in m/s2?