Physics help please...need instruction on how to do itplease...Circular Motion &
ID: 1733758 • Letter: P
Question
Physics help please...need instruction on how to do itplease...Circular Motion & Gravitation (4 questions)?
(1) An airplane is flying in ahorizontal circle at a speed of 130 m/s. The 86.0 kg pilot does notwant his centripetal acceleration to exceed 5.00 times free-fallacceleration. The minimum radius of the circular path is3.45x10^2(a) At this radius, what is the net force that maintains circularmotion exerted on the pilot by the seat belts, the friction betweenhim and the seat, and so forth?
(2) A 12500 N car traveling at 52.0 km/h rounds a curve of radius3.00 multiplied by 102 m.
(a) Find the centripetal acceleration of the car.
(b) Find the force that maintains centripetal acceleration.
(c) Find the minimum coefficient of static friction between thetires and the road that will allow the car to round the curvesafely
(3) An air puck of mass 0.033 kg is tied to a string and allowed torevolve in a circle of radius 1.0 m on a frictionless horizontalsurface. The other end of the string passes through a hole in thecenter of the surface, and a mass of 2.0 kg is tied to it. Thesuspended mass remains in equilibrium while the puck revolves onthe surface.
(a) What is the magnitude of the force that maintains circularmotion acting on the puck?
(b) What is the linear speed of the puck?
(4) In a popular amusement-park ride, a cylinder of radius 3.00 mis set in rotation at an angular speed of 3.00 rad/s, as shown inFigure 7-20. The floor then drops away, leaving the riderssuspended against the wall in a vertical position. What minimumcoefficient of friction between a rider's clothing and the wall ofthe cylinder is needed to keep the rider from slipping? (Hint:Recall that Fs = µsFn, where the normal force is the forcethat maintains circular motion.) (1) An airplane is flying in ahorizontal circle at a speed of 130 m/s. The 86.0 kg pilot does notwant his centripetal acceleration to exceed 5.00 times free-fallacceleration. The minimum radius of the circular path is3.45x10^2
(a) At this radius, what is the net force that maintains circularmotion exerted on the pilot by the seat belts, the friction betweenhim and the seat, and so forth?
(2) A 12500 N car traveling at 52.0 km/h rounds a curve of radius3.00 multiplied by 102 m.
(a) Find the centripetal acceleration of the car.
(b) Find the force that maintains centripetal acceleration.
(c) Find the minimum coefficient of static friction between thetires and the road that will allow the car to round the curvesafely
(3) An air puck of mass 0.033 kg is tied to a string and allowed torevolve in a circle of radius 1.0 m on a frictionless horizontalsurface. The other end of the string passes through a hole in thecenter of the surface, and a mass of 2.0 kg is tied to it. Thesuspended mass remains in equilibrium while the puck revolves onthe surface.
(a) What is the magnitude of the force that maintains circularmotion acting on the puck?
(b) What is the linear speed of the puck?
(4) In a popular amusement-park ride, a cylinder of radius 3.00 mis set in rotation at an angular speed of 3.00 rad/s, as shown inFigure 7-20. The floor then drops away, leaving the riderssuspended against the wall in a vertical position. What minimumcoefficient of friction between a rider's clothing and the wall ofthe cylinder is needed to keep the rider from slipping? (Hint:Recall that Fs = µsFn, where the normal force is the forcethat maintains circular motion.)
Explanation / Answer
I'm taking the time to answer these 4 questions, so please don'tforget to rate well and ask any questions if they may come up. 1) An airplane is flying in a horizontal circle at a speed of 130m/s. The 86.0 kg pilot does not want his centripetal accelerationto exceed 5.00 times free-fall acceleration. The minimum radius ofthe circular path is 3.45x10^2 (a) At this radius, what is the net force that maintains circularmotion exerted on the pilot by the seat belts, the friction betweenhim and the seat, and so forth?F=mv2/r=(86kg)(130)2/(345)=4212.75 N