Answer:
e) True Yes both are constant
Explanation:
Let us propose the solution of the problem before reviewing the statements, we use Newton's second law
F - fr = m a
N- W = 0
N = mg
The equation for the force of friction is
fr = μ N
F - μ mg = m a
F = m (a- μ g)
Now let's review the claims
.a) False. Normal force and friction are constants.
.b) False. Both are constant.
.c) False. Both are constant.
d.) False
e) True Yes both are constant
Trial and error
scientific laws and theories are proven by experimental data and large bodies of evidence.
Given: Mass of earth Me = 5.98 x 10²⁴ Kg
Radius of satellite - radius of the earth
r = 13,594 Km - 6,380 Km = 7,214 Km convert to meter "m"
r = 7,214,000 m
G = 6.67 x 10⁻¹¹ N.m²/Kg²
Required: What is the period T = ?
Formula: F = ma; F = GMeMsat/r² Centripetal acceleration ac = V²/r
but V = 2πr/T
equate T from all equation.
F = ma
GMeMsat/r² = Msat4π²/rT²
GMe = 4π²r³/T²
T² = 4π²r³/GMe
T² = 39.48(7,214,000 m)³/(6.67 x 10⁻¹¹ N.m²/Kg²)(5.98 x 10²⁴ Kg)
T² = 1.48 x 10²² m³/3.99 x 10¹⁴ m³/s²
T² = 37,092,731.83 s²
T = 6,090.38 seconds or 1.7 Hr
X=15! hope this helps! Also please look at my questions about the cannon ball!!! need help!
