21 May WHAT WILL THE FORCE OF ATTRACTION BE IF THE DISTANCE BETWEEN THE TWO MASSES IS TRIPLED?
Two masses arc attracted by a gravitational force of 0.45 N. What will the force of attraction be if the distance between the two masses is tripled?
2.The acceleration of gravity on the surface of Jupiter is 26.7 m/s2. What is the weight on Jupiter of a woman whose weight on Earth is 110 lb?
3.Suppose an artificial satellite has been put into circular orbit about the Earth, at a distance from the center of the Earth equal to 1/4 the distance from the Earth’s center to the Moon’s center. In terms of the Moon’s period Tm, what will be the period of the satellite?
4.Two masses arc attracted by a gravitational force of 0.14 N. What will the force of attraction be if the distance between these two masses is halved?
5.A ball traveling in a circle with a constant speed of 3 m/s has a centripetal acceleration of 9 m/s2. What is the radius of the circle?
6.A car with a mass of 1000 kg travels around a banked curve with a constant speed of 27 m/s (about 60 MPH). The radius of curvature of the curve is 40 m. a) What is the centripetal acceleration of the car? b) What is the magnitude of the horizontal component of the normal force that would be required to produce this cenÂtripetal acceleration in the absence of any friction?
7.A ball is traveling at a constant speed of 6 m/s in a circle with a radius of 0.8 m. What is the centripetal acceleration of the ball?
8.A man weighs 650 N while on the surface of Earth. If he is transported to the planet Mythos, which has the same mass as Earth but a radius that is five times larger than Earth’s, his weight would be
9.A person weighing 500 N rides on a Ferris wheel sitting on a bathroom scale. At the highest point of motion, the scale reads 200 N while the person continues to move in a circular path. The centripetal force on the person at this point is
10.A 0.25-kg ball moving in a circle at the end of a string has a centripetal acceleration of 4 m/s2. What is the magnitude of the centripetal force exerted by the string on the ball to produce this acceleration?
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