Answer:
static friction
Explanation:
static friction is the friction force that acts on objects at rest
The angular speed such a cylinder must have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth is 0.046 rad/s.
<h3>
Angular speed of the cylinder</h3>
The angular speed such a cylinder must have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth is calculated as follows;
a = v²/r
v² = ar
(ωr)² = ar
ω²r² = ar
ω²r = a
ω² = a/r
ω = √(a/r)
where;
- a is centripetal acceleration = acceleration due to gravity, g
- r is radius of the cylinder = 5.66 m / 2 = 2.83 mi = 4554.4 m
- ω is angular speed
ω = √(g/r)
ω = √(9.8/4554.4)
ω = 0.046 rad/s
Thus, the angular speed such a cylinder must have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth is 0.046 rad/s.
Learn more about angular speed here: brainly.com/question/6860269
#SPJ1
Kepler's laws describe how the planets move in an orbit around the sun, so the answer would be C. The shape of an orbit.
<span>Alicia
wanted to pull out a particular issue from a pile of magazines. First,
she tried pulling slowly, and the whole pile began to move. Then she
tried pulling quickly, and the issue she wanted came out without the
pile moving. The pile did not move because of the?
a. larger force Alicia applied
b. smooth surface of the magazines
c. inertia of the pile and friction <--- *** Answer ***
d. friction between the magazines
(If this is your question)
Hope this helps :p
</span>
Work is equal to the force exerted times the distance traveled. This can be expressed using the following formula:
W = F × D
Insert any known values into the formula above:
W = (70 N) × (9 m)
Simplify the right side of the equation:
W = 630 N·m
The work done is equal to 630 J.
I hope this helps!