A 4.0-kg mass attached to the end of a string swings in a vertical circle of radius 2.0 m. When the string makes an angle of 35° with the vertical as shown, the speed of the mass is 5.0 m/s. At this instant what is the magnitude of the force the string exerts on the mass? 89 N 50 N 82 N O 11 N 0 61 N p q# 20 p. 242 chap 7

Determine the magnitude of the gravitational acceleration of a 1200 kg satellite in geosynchronous orbit (35,786 km above Earth’s surface). The radius of Earth is 6371 km and its mass is 5.972 x 1024 kg. Group of answer choices 9.8 m/s2 4.8 m/s2 0.0 m/s2 0.22 m/s2   Question 14 A 3 kg box breaks free from a rope at a vertical acceleration of 5 m/s2. What tension broke the rope? 5 m/s2 29.4 N 15 N 44 N Question 15 A 130.0-kg astronaut pushes on a spacecraft with a force of 250 N in “gravity-free” space.  The spacecraft has a total mass of 9.0 x 103 kg. Determine the magnitude of the acceleration of the astronaut during the pushing.  0.52 m/s2 0.028 m/s2 0.0 m/s2 1.9 m/s2

A 200 g block on a 58.0 cm -long string swings in a circle on a horizontal, frictionless table at 95.0 rpm You may want to review (Pages 186 - 189) Part A What is the speed of the block? Express your answer with the appropriate units. 5.46 Submit Part B μA 10.27 Submit m X Incorrect, Try Again; 5 attempts remaining S Previous Answers Request Answer What is the tension in the string? Express your answer with the appropriate units. μÅ 3 ? N ? Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining

An asteroid starts at rest infinitely far from an Unknown planet. The asteroid has a mass of 5.00×104 kg. The mass of the planet, and the radius of the planet are given below. MAsteroid= 5.00x104 kg MPlanet-8.60x1025 kg Rplanet= 2.50x107 m What is final velocity when the asteroid hits the planet? 4.3 m/s 9180 m/s 5050 m/s 21400 m/s 1.15 x 103 m/s

NASA uses a machine often called the "vomit comet" to mimic the effects of low gravity in space during astronaut training. The machine moves in circular arcs at a speed of v = 214 m/s. What is the radius the pilot must fly to create weightlessness as they go around the top of the circular arc? Give your answer in meters.

A ball is on the end of a string. The ball is being swung in a vertical circle at a constant speed.The length of the string is 1.30 m. The mass of the ball is 2.10 kg. The maximum tension the string can withstand before breaking is 54.0 N.What is the maximum speed of the ball without the string breaking when the ball is at the top of the circle (Point A in the figure)?

A 20-g bead is attached to a light 120-cm-long string as shown in the figure. This bead moves in a horizontal circle with a constant speed of 1.5 m/s. What is the tension in the string if the angle a is measured to be 25°? 120 cm 0.46 N 0.22 N 0.089 N 0.041 N 0.20 N

There is a distance of 2 m between the centers of two identical spheres, each with a mass of 25 kg. What is the magnitude of the gravitational force that one sphere exerts on the other? A 4. 17 · 10-10 N B 8. 34 · 10-10 N 1. 04 · 10-8 N C 2. 09 · 10-8 N D

Homework Problem 31: A professor is swinging a ball (Mass 0.358Kg) in a vertical circle at a constant speed. The length of the string is 0.29m. The professor measures the tension and discovers that it is 1.715 times larger at the bottom of the circle than at the top. What is the speed of the swinging mass?   Note: The acceleration due to gravity is directly downwards.