1. King Fahd University of Petroleum & Minerals
Mechanical Engineering
Dynamics ME 201 BY
Dr. Meyassar N. Al-Haddad
Lecture # 18

2. Projectile
Determine the speed at which the basketball at A must be thrown at the angle of 30o so that it makes it to the basket at B. At what speed does it pass through the hoop?

3. Normal and Tangential
At a given instant, the automobile has a speed of 25 m/s and an acceleration of 3 m/s2 acting in the direction shown. Determine the radius of curvature of the path and the rate of increase of the automobile’s speed.

4. Polar and Cylindrical
The slotted fork is rotating about O at a constant rate of 3 rad/s. Determine the radial and transverse components of velocity and acceleration of the pin A at the instant q = 360o. The path is defined by the spiral groove r = (5+q/p) in., where q is in radians.

5. Relative motion
At the instant shown, cars A and B are traveling at the speeds shown. If B is accelerating at 1200 km/h2 while A maintains a constant speed, determine the velocity and acceleration of A with respect to B.

6. W=5 Ib
Smooth
vA=10ft/s
Unstretched length =3 ft
k=10 Ib/ft
N=?
aA=?
Problem 13-80

8. Problem 13-89
Smooth
Horizontal
m = 0.5 kg
r = (0.5 q)
q = 0.5 t2 rad
Applied force
Normal force
t = 2 s. r q

9. Problem 14-8
h= ?
Rest
vB= 100km/h
r= minimum
N=4 mg = N

10. Problem 14-31
m=5 g
Rest at A
R=?
Vc=?

11. Thank You