Answer:
The relation between F1 and F2 is : F1 = - F2. That is the forces are equal in magnitude but opposite in direction.
Explanation:
- According to Newton's 3rd law of motion statement, it states that for all actions there is equal but opposite reaction.
- This law is also known as the law of symmetry. It means that forces occur in pairs in any conditions. An object will not apply force on other object without experiencing the force on itself.
- This means when an object exerts force F1 on another object, it also exerts the same force of same magnitude on itself in opposite direction to the force it exerted on another object.
Answer:
T = 712.9 N
Explanation:
First, we will find the speed of the wave:
v = fλ
where,
v = speed of the wave = ?
f = frequency = 890 Hz
λ = wavelength = 0.1 m
Therefore,
v = (890 Hz)(0.1 m)
v = 89 m/s
Now, we will find the linear mass density of the wire:
where,
μ = linear mass density of wie = ?
m = mass of wire = 90 g = 0.09 kg
L = length of wire = 1 m
Therefore,
μ = 0.09 kg/m
Now, the tension in wire (T) will be:
T = μv² = (0.09 kg/m)(89 m/s)²
<u>T = 712.9 N</u>
The speed of the first car just before the collision is 26.73 km/h.
<h3>What is conservation of momentum principle?</h3>
When two bodies of different masses move together each other and have head on collision, they travel to same or different direction after collision.
The external force is not acting here, so the initial momentum is equal to the final momentum. For inelastic collision, final velocity is the common velocity for both the bodies.
m₁u₁ +m₂u₂ =(m₁ +m₂) v
Given a 808 kg automobile is sliding on an icy street. It collides with a parked car which has a mass of 632 kg. The two cars lock up and slide together with a speed of 15.0 km/h.
Second car is parked, so its velocity will be zero.
808 x u +632 x 0 = (808 +632 ) x 15
u = 26.73 km/h
Thus, the speed of the first car just before the collision is 26.73 km/h
Learn more about conservation of momentum principle
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