The mass of a certain neutron star is 7 x 10^10 kg and its radius is 6 m. What is the acceleration of gravity at the surface of this condensed, burned- out star? The value of the universal gravitational constant is 6.67 x 10^-11 N.m^2/kg42 Question 6 1 pts In a popular amusement-park ride, a cylinder of radius 3.62 m is set in rotation at an angular speed of 4.535rad/s, as shown in the figure. The floor then drops away, leaving the riders suspended against the wall in a vertical position. + 3.62 m- What minimum coefficient of friction between a rider's clothing and the wall of the cylinder is needed to keep the rider from slipping? The acceleration due to gravity is 9.81 m/s^2