1. : (t) = 0 + υ t, s(t) = υ t,
2. : ,
υ(t) = υ0 t, ,
3. : ,
υ(t) = υ0 g t
4. : , , , υ = 2 π ν R, υ = ω R
, , = 4 π2 ν2 R, = ω2 R
,
ω = nst (φ ).
1. R : , α = ()
2. I : , ( ), ( )
[ .. , , ==> = nst () ].
II :
III :
3. : , .
4. :
5. I- : ,
1. N = = m g, (.. , , ), N .
(+) (−) : = N = m (g )
, ( = g).
2. :
- , F. = k | |, k , −
- , F = μ N, μ
- , F = m g
- , ,
G = 6,67 10-11
- , F. = ρ g V, F. = = m g .
3. II :
: F − F + 0 F Sin α = m ,
( )
: 0 + 0 + N − F s α = 0, F = m g, F = μ N.
1. : ,
2. :
3. : ,
4. : , = F s s α, α = ()
- , = m g s, > 0 , < 0 .
- , = − μ N s.
- ,
5. : = + ,
- ,
- , = m g h
- ,
6. : = 2 1, = Δ.
7. : = (2 1), = Δ.
8. : 1 + 1 = 2 + 2.
9. : , N = F υ (/ ).
1. , , ℓ − (.. , , )
2. ,
3. ,
1. : , , S
|
|
2. : = ρ g h.
3. :
- F. > F .
- F. < F .
- F. = F .
( ),
(t) = Sin (ωt + φ0) (t) = m s (ωt + φ0),
φ0 , ( m) .
,
υ(t) = υm s (ωt + φ0) υ(t) = υm Sin (ωt + φ0),
υm = m ω − .