A 0.50 kg mass is attached to a string 1.0 m long and moves in a horizontal circle at a rate of 2.0 Hz. a) Calculate the centripetal acceleration of the mass
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- The mean radius of earth from the Sun is 0.67 times the mars mean distancxe of mars from the sun. What is the time (in years) for mars to orbit the sun?The Earth has a mass of 5.97 * 1024 kg and the Sun has a mass of 2.00. * 1030 kg. If they are separated by a distance of 1.50 * 108 km, what is the force in N between the Earth and the Sun ( enter answer in scientific notation). If the Earth takes 365.32 days to complete a complete circle what is the centripetal force in N acting on the Earth?A 200 kg satellite is placed into orbit around the Earth with a radius of 4.23 x 107 m. The mass of the Earth is about 6 x 1024 kg. (a) Find the gravitational force on the satellite.(b) Use the equation of centripetal force to find the speed of the satellite.
- Assume the Moon travels in a perfect circle around the Earth, with masses 7.35 * 1022 kg and distances 3.85 * 105km and takes 27.32 days to complete a complete circle. What is the centripetal force (in N) acting on the Moon?A newly discovered planet moves in a circular orbit around the star at a constant speed. The direction of the planet's acceleration is:Consider a car moving on a circular track with constant speed. Which of the following statements is incorrect? a) The distance to the center of the circle does not vary b) The vehicle retains the magnitude of its speed c) The vehicle has no acceleration d) The vehicle has acceleration, but its speed is constant e) Centrifugal acceleration is zero
- Astronomers discover an exoplanet, a planet orbiting a star other than the Sun, that has an orbital period of 2.25 Earth years in a circular orbit around its star, which has a measured mass of 3.80×1030 kg. a) What is the radius of the orbit in meters? b) If the exoplanet has a mass of 6.100x10 24kg and a radius of 6520km, what will be the acceleration due to gravity on the surface of the exoplanet?How fast (in rpm) must a centrifuge rotate if a particle 6.7 cm from the axis of rotation is to experience an acceleration of 200000 g’s? Express your answer using two significant figures2) Base your answer to the question on the information below and on your knowledge of physics. A gas-powered model airplane has a mass of 4.50 kilograms. A student exerts a force on a cord to keep the airplane flying around her at a constant speed of 50.0 meters per second in a horizontal, circular path with a radius of 100 meters. Calculate the magnitude of the centripetal force exerted on the airplane to keep it moving in this circular path. [Show all work, including the equation and substitution with units. ]