SPRING 2005

HOMOKINETICS II

PRACTICE PROBLEMS I

1. P =F P = 240 N P = 240N P = 0.012 N/cm

A 400 cm x 50 cm 20000 cm

2. Volume = length x length x length

Volume = 0.3 cm x 4.4 cm x 3.2 cm Volume =4.224 cm

3. Specific weight=weight Specific weight=50 N Specific weight=11.84 N/cm

Volume 4.224 cm

Wt =ma_g m=wt m=50 N m= 5.09 kg

a_g 9.81 m/s²

density = m density = 5.09 kg density=1.21 kg/cm

v 4.224 cm

4. T=Fd^ Batter # 1 T=11.15 N x 30.38 cm T=338.74 N/cm

Batter # 2 T=11.15 N x 38.6 cm T=430.39 N/cm

5.

1. Wt=ma_g m=wt m= 10 lb m=0.311 slugs

a_g 32.2 ft/s²

2. Wt=ma_g m=wt m= 165 lb m=5.12 slugs

a_g 32.2 ft/s²

3. Wt=ma_g m=wt m= 847 N m=86.34 kg

a_g 9.81 m/s²

6. s=l 222.51 m/s = d d = 222.51 m/s x .001 s

t .001 s

l=.223 m

7a. v = d v= 100 m v=10.20 m/s

t 9.8 s

b. v= 150 ft v=7.14 ft/s

21 s

c. v=43.89 m v= 14.64 m/s

3 s

d. v= 250 ft v=83.33 ft/s

3 s