C) voltage is a force that pushes charge along
Option A, B, C, D
Child on a swing, Pendulum, Bow and Arrow, Roller Coaster is mechanical energy being conserved
<u>Explanation:</u>
Mechanical energy is the total of kinetic and potential energy in a thing that is employed to do a job. A conservative force is a power like gravitation or a spring that “bends backward” energy that was conveyed by producing activity. The friction and other non conservative forces, nevertheless, conservation of mechanical energy is surely conserved.
When one stretches or contracts an elastic object, one does act fronting the spring force, and that task finishes up saved as elastic potential energy. Constantly shifting things up and down, producing variations in potential energy is termed as gravitational potential energy.
Here Child on a swing, Pendulum, Bow & Arrow, Roller Coaster in all there is the continuous conversion between gravitational/elastic potential energy and kinetic energy.
Answer:
Explanation:
1) No take-off possible
2) The downward force is greater than the upward force.
3) 2000 + 950 = 2950 N upward
Answer:
2.7 m/s
Explanation:
Draw a free body diagram of the ball. There are two forces:
Weight force mg pulling down
Tension force T pulling 39° above the horizontal
Sum of the forces in the y direction:
∑F = ma
T sin θ − mg = 0
T = mg / sin θ
Sum of the forces in the radial (+x) direction:
∑F = ma
T cos θ = m v² / r
Substitute:
(mg / sin θ) cos θ = m v² / r
mg / tan θ = m v² / r
g / tan θ = v² / r
v = √(gr / tan θ)
Given that r = 0.6 m and θ = 39°:
v = √(9.8 m/s² × 0.6 m / tan 39°)
v ≈ 2.7 m/s
<span>c. coefficients.
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