3.2.
3.3.
3.4.
3.5.
3.6.
3.7.
3.8.
3.9. 3.10
n = 5; T = 2 s; f= 0,5 s'1 7=2 s
t-f**
4n
3.11. ty
3.12.
3.13.
3.14.
3.15.
3.16.
"m = *(2 + ;f) s-1
ty=n[4 _3f)s 1
a) /, = 0,036 kg • m2;
b) \2 = 0,00225 kg • m2
a) I - a2 m = 0,01 kg • m2;
b) / = 3 a2m = 0,03 kg • m2 Ma = 20 N • m, Mb = O
= i*1
3.17.
3.18.
3.19.
3.20.
3.22.
3.23.
3.24.
3.25.
3.26.
3.28.
3.29.
3.30.
3.31.
3.33.
3.34.
0,027t
M = —-— N • m
a =
Mg
M + -m
T = -ymgsina
A<S- -0,067r2 j; A7= 0,5 s # = 2,8 J
ar= 99343,5 J; k = 2,91%
V2
h = —, h = 0,41 m
A&= 3&, A&= 3000 J W = 9,375 J
^ot>r = 2,6 • 1029 j;
c
b
Aty = 2,286 s"1; A# = 22,86 J
km
Z-Rz, h « 13635 km
4.1. b
4.2. d
4.3. na Księżycu
4.4. energia wzrosła o Atfp =
= mg(h2 - /?,), A#= 3,1 J
4.5. W = 2mgh, W * 824 J
4.6. Agp - 0
4.7. d
4.8. a
4.10. F = 1,0005 • 10-6 N = 1,0005 gN;
.i * 6,67 ■ 10 9 m/s2
4.11. h = #?z(>/2 - i), h ~ 2638,5 4-12- 7m = -p Yz = pg; 7m “ 7,22 m/*. 7k ^
4.13. — = — = 625
7z *
, |C/V(7
4.14. h = y—^
4.15. x= --= = 0,11/ i + Vn
4.17.
4.18.
4.20.
4.21.
4.22.
4.23.
4.24.
4.25.
4.26.
4.27.
4.28.
4.29.
4.31.
4.32.
4.33.
4.34.
4.35.
4.36.
4.37.
8*1
Mz = ^> Mz = 5,9 • 1024 kg;
4.38.
GT
2- 10'" kg
P =
3k8
4nRzG
h = R
, p ~ 5,5 • 103-^
m
4.39. h
gm7t2
4n2
R, h~35 870 ki
masa planety A jest większa;
Ma = 2Mb
2,46
v = ^2gh, v ~ 42,2 km/h
2v
At = —, At = 0,82 s 8 h
t = —, f = 1 s
vb = :V2gh
v0 = 29,43 m/s; h - 44,145 m v0 = y[gh, v0 = 14 m/s
vo = ^-
2 gh +
, hn /)n ,
^ = ^ = ^^3 = 3,125 cm
vY = 19,6 m/s; vx = 8 m/s; v = 21,17 m/s
v = ^v20 + 2 gh
8 x
2\v
= v^-
'2 (h, - h2)
, d ~ 1 m
fM = hv(y) , rM - 227,9 min km
Tw = /'/'Ml — I , Tw « 7 miesięcy
i I I dni
4.40.
4.41.
4.42.
4.43.
4.44.
v = 1534 m/s
M =
4n2(R + /i)3
GT2 '
A4 = 5,9 • 1024 kg v2 R
, M ~ 7,37• 10' 'kg
M =
v = 24,1 km/s 2
4.45.
4.46.
4.47. a) F, = m
£ = A/l-)" - 2,83
GM,
R2
7, » 9,8296 N;
b) F2 - m
F2 - 9,7032 N
4.48. F = m
7 - 109 m
I2kV
GMk
R2
-(
2 7t W
F ~ m ■ 3,69
4.49. A F = m
I2n\2.
N
kg
GM
+ I — /?„
, AF = 6,897 N;
4.50.
4.51.
4.52.
4.53.
„Am" = 0,7 kg Fr = 99% Fr
Af =
, Af - 0,005