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schepotkina [342]
3 years ago
9

Describe what happens to the KE of the simple pendulum as it swings back and forth.

Physics
2 answers:
diamong [38]3 years ago
8 0

Answer:

Explanation: do y like me yes or no

Sauron [17]3 years ago
4 0
As the pendulum swings back and forth, the balance between the two types of energy changes constantly. At some points in its swing, the pendulum has more kinetic energy. At other points, it has more potential energy. Of course, no working system is ideal. pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. ... When the swing is raised and released, it will move freely back and forth due to the force of gravity on it. As a pendulum swings, its potential energy converts to kinetic and back to potential. Recall the concept of conservation of energy—that energy may change its form, but have no net change to the amount of energy.
Answer. Answer: When you let go of the raised bob, its potential energy is converted to kinetic energy as it swings down with increasing speed, and then back to potential energy as it swings up on the other side with decreasing speed. The massive object is affectionately referred to as the pendulum bob. When the bob is displaced from equilibrium and then released, it begins its back and forth vibration about its fixed equilibrium position. The motion is regular and repeating, an example of periodic motion.
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A skydiver free falls from rest. How long does it take for the skydiver to reach 7 m/s?
aev [14]

Answer:

<em>The skydiver needs 0.71 seconds to reach 7 m/s</em>

Explanation:

<u>Free Fall Motion </u>

When an object is dropped in free air (no friction) from a certain height h, it follows a free-fall motion, whose acceleration is due exclusively to gravity. The speed at a moment t when the object is dropped (from rest) is:

V_f=gt

We need to find How long does the skydiver needs to reach 7 m/s. We solve for t

\displaystyle t=\frac{V_f}{g}

\displaystyle t=\frac{7}{9.8}

t=0.71\ sec

The skydiver needs 0.71 seconds to reach 7 m/s

5 0
3 years ago
A golfer strikes her tee shot with the following velocities, vx = 106 m/s &amp; vy = 66.2 m/s. a. What is the velocity of flight
lara [203]

Answer:

a) V ≈ 125 m/s;  b) Δt = 13.24 s;  c) ΔS ≈ 1450 m

Explanation:

a) We have just to calculate the vector resultant.

V² = 106² + 66.2²

V² = 15618.44

V ≈ 125 m/s

b) The time of flight is equal to the time to reach the maximum height summed to the time to reach the land.

In vertical:

V = V₀ + a * t

V = 66.2 - g * t

0 = 66.2 - 9.8 * t

t ≈ 6.76 s

So: Δt = 13.24 s

c) In horizontal:

V = ΔS / Δt

106 = ΔS / 13.52  ⇒  ΔS = 106 * 13.52

ΔS = 106 * 13.52

ΔS = 1433,12

ΔS ≈ 1450 m

3 0
1 year ago
Who discovered that sunlight is made of all the colors of the rainbow?
adelina 88 [10]
Isaac Newton was experimenting with prisms and discovered that all light is made up of the colors of the rainbow.

The correct answer is A.
6 0
3 years ago
Read 2 more answers
Calculate the average acceleration of a car that changes speed from 0 m/s to 20 m/s in 5 s.
Vikki [24]

Answer:

4

Explanation:

a=vf-v

a=20-0÷5

a=4meter per second square

6 0
2 years ago
Consider an ideal monatomic gas of N particles with mass m in thermal equilibrium at a temperature T. The gas is contained in a
harina [27]

Answer:

K.E.=\dfrac{3}{2}KT

Explanation:

Given that

Number of particle =N

Equilibrium temperature= T

Side of cube = L

Gravitational acceleration =g

The kinetic energy of an atom  given as

K.E.=\dfrac{3}{2}KT

Where

Equilibrium temperature= T

Boltzmann constant =K

        K =1.380649×10−23 J/K

3 0
3 years ago
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