1. ENGR 215 ~ Dynamics Sections 13.5

2. Equations of Motion: Normal and Tangential Components

3. Reminder
n – direction points to center of arc.
t x n = b

4. Remember….

5. Lecture Example 1: The jet plane is travelling at a constant speed of 1000 ft/s along a curve y = 20*10-6 x If the pilot weighs 180 lb, determine the normal and tangential components of the force of the seat on the pilot when y = 10,000 ft.

6. Lecture Example 2: The 600 kg wrecking ball is suspended from a cable
Lecture Example 2: The 600 kg wrecking ball is suspended from a cable. If the ball has a speed v = 8 m/s at its lowest point, θ = 0˚, determine the tension in the cable at this instant. Also, determine the angle to which the ball swings before it stops.

7. Lecture Example 3: A 1700-kg car travels along a circular banked track with a radius of curvature of ρ = 100 m. The coefficient of friction between the tires and the road is μs = Determine the maximum constant speed the car can travel without sliding up the slope.