Suppose a race car speeds along a curve with a constant tangential speed of 75.0 m/s. Neglecting the effects due to the banking of the curve, the centripetal.

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Presentation transcript:

Suppose a race car speeds along a curve with a constant tangential speed of 75.0 m/s. Neglecting the effects due to the banking of the curve, the centripetal acceleration on the car is 22.0 m/s2.What is the radius of the curve? 255.7 m

The largest tire ever made had a radius of 1. 75 m The largest tire ever made had a radius of 1.75 m. Suppose this tire underwent a centripetal acceleration 0.83 m/s2. What would the velocity be? 1.2 m/s

A 615 kg car completes one lap in 14 A 615 kg car completes one lap in 14.3 s around a circular track w/ a radius of 50 m. Find the linear speed of the car. Find the centripetal acceleration. Find the magnitude of the force that produces this Acceleration. 22 m/s; 9.65 m/s2

A 45 kg child riding a Ferris wheel has a tangential speed of 8. 5 m/s A 45 kg child riding a Ferris wheel has a tangential speed of 8.5 m/s. What is the centripetal acceleration of the child if the distance from the child to the axis of the wheel is 18 m. Find the magnitude of the Normal force on the child at the top. 4 m/s2; 180 N

A motorcycle and its rider have a mass of 235 kg A motorcycle and its rider have a mass of 235 kg. The motorcycle has a velocity of 25 m/s and moves in a circular path with a radius 25 m. What is the centripetal acceleration of the motorcycle? What is the centripetal force acting on the motorcycle (type of force & value). What is the coefficient of friction? 25 m/s2; 5875 N; 2.55

Spin Out If the ride has a radius of 2 m and rotates once every 0.9 s, and the mass of the rider is 40 kg. (a)what is the speed of the rider? (b)What is the centripetal acceleration? (c)What causes this acceleration? (d)When the floor drops, what holds the rider up? (e) What is µ, if the m = 40 kg v = 13.96 m/s; 97.44 m/s2; Normal Force; Friction; (3897.6 N) 0.1

A 2 kg object is attached to a 1 A 2 kg object is attached to a 1.5 m long string and swung in a vertical circle at a constant speed of 12 m/s. What is the tension in the string at the top of the circle? At the bottom? At the top tension and gravitational force are both going down so they add, 172.4 N At the bottom tension is going up and gravitational force is going down, 211.6 N

Let’s say you jumped up 0. 5 m from the Earth Let’s say you jumped up 0.5 m from the Earth. Assuming you know nothing about Fg and only knew of FG, then knowing the Earth’s mass (5.98 x 1024 kg) and the Earth’s radius (6.37 x 106 m), find the acceleration you experience.

has a mass of 200 kg, what is the mass of the other rock? The magnitude of the gravitational force between two rocks just before they collide (r = 0.04 m) is 5.2 × 10–2 N. If one rock has a mass of 200 kg, what is the mass of the other rock? 6236.88 kg

Deimos, a satellite of Mars, has an average radius of 6. 3 km Deimos, a satellite of Mars, has an average radius of 6.3 km. If the gravitational force between Deimos and a 3.0 kg rock at its surface is 2.5 ×10–2 N, what is the mass of Deimos? 4.96 x 1015 kg

Find the magnitude of the mutual gravitational force between the Earth and the Moon. What is the orbital velocity of the moon? 1.99 x 10 20 N; 1018.95 m/s