Provided the dots represent time-lapse snapshots of an object's motion from left to right, then
(a) The underlying object is slowing down because the distance between adjacent snapshots (dots) decreases with time
(the answer is intentionally reworded to avoid sounding nonsensical)
Answer:
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The smallest angle from the horizontal that will cause the eggs to slick across the bottom of a Teflon-coated skillet is 2.29°
<u>Explanation:</u>
Given-
Coefficient of friction, μ = 0.04
angle, Θ = ?
In order for the scrambled eggs to slide of the teflon, the force applied on the teflon due to gravity must be equal to the maximum value of the static friction force:
F = μ
mg sinΘ = μ mg cos Θ
sinΘ = μ cosΘ
μ = sinΘ / cosΘ
μ = tanΘ
0.04 = tanΘ
Θ = tan⁻¹ (0.04)
Θ = 2.29°
Therefore, the smallest angle from the horizontal that will cause the eggs to slick across the bottom of a Teflon-coated skillet is 2.29°
Answer:
F = 0.535 N
Explanation:
Let's use the concepts of energy, at the highest and lowest point of the trajectory
Higher
Em₀ = U = mg y
Lower
= K = ½ m v²
Emo =
mg y = ½ m v2
v = √ 2gy
y = L - L cos θ
v = √ (2g L (1-cos θ))
Now let's use Newton's second law n at the lowest point where the acceleration is centripetal
F = ma
a = v² / r
In turning radius is the cable length r = L
F = m 2g (1-cos θ)
Let's calculate
F = 2 1.25 9.8 (1 - cos 12)
F = 0.535 N