Question

I need some help with these final problems please!

9. (a) Find the centripetal acceleration on a 2000 kg car travelling with a speed of 25 mph around a curve of 35 m. A banked curve makes an angle of 30° with the horizontal. Find the centripetal acceleration of this banked curve. (b) 10. (a) Find the force of attraction between the earth and the sun using the Newton's law of Universal Gravitation and the following: Mass of the earth 5.98 x 1024 kg Mass of the sun 1.99 x 1030 kg Mean distance between the earth and the sun-1.50 x 1011 m Universal Gravitational constant 6.67 x 101 Nm2/kg Given that the period of the earth about the sun is 1 year and mean distance between the earth and the sun is 1.50 x 1011m, find the period of a planet whose mean distance to the sun is 4.50 x 101 m. (b)

Answer 1

Solution 9:

Here we shall use 2 formula

1. Centripetal acceleration a = v^2/r

2. Angle of banking tan (theta) = v^2/rg

Solution q(as Centripetal ace ele r at ion a As perナ question hus centripetal acc eleration 35 m Solution a Aule of beukina (b) is iv As per the question 3 (3.8 mis')( tan») Centripetal acceleration # 5, 6 84 mist.