The incorrect answer is C
Answer:
Spring force constant = 1.168 N/m
Explanation:
The period of an oscillating spring can be obtained using the formula:
T = 2π
The parameters available for the solution of the problem are itemized as follows:
Mass of air-track glider = 0.2 kg
Period of oscillation , T = 2.60 seconds
<em>( This is the period of oscillation because it is the time it takes the glider to move through the equilibrium point twice, thus the time it takes for the motion to e a complete cycle)</em>
Spring constant, k = ?
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inserting the parameters, we have
2.6 = 2π
=
Squaring both sides to remove the square root, we have
= 
Solving for K, by cross multiplying, we obtain the value of k as 1.168 N/m
∴ The value of the spring's force constant is = 1.168 N/m
It will loose energy to the ground
It it will desrease in speed or velocity
Answer:
The puck moves a vertical height of 2.6 cm before stopping
Explanation:
As the puck is accelerated by the spring, the kinetic energy of the puck equals the elastic potential energy of the spring.
So, 1/2mv² = 1/2kx² where m = mass of puck = 39.2 g = 0.0392 g, v = velocity of puck, k = spring constant = 59 N/m and x = compression of spring = 1.3 cm = 0.013 cm.
Now, since the puck has an initial velocity, v before it slides up the inclined surface, its loss in kinetic energy equals its gain in potential energy before it stops. So
1/2mv² = mgh where h = vertical height puck moves and g = acceleration due to gravity = 9.8 m/s².
Substituting the kinetic energy of the puck for the potential energy of the spring, we have
1/2kx² = mgh
h = kx²/2mg
= 59 N/m × (0.013 m)²/(0.0392 kg × 9.8 m/s²)
= 0.009971 Nm/0.38416 N
= 0.0259 m
= 2.59 cm
≅ 2.6 cm
So the puck moves a vertical height of 2.6 cm before stopping
Answer:
A
Explanation:
option A is correct
the best example of elastic collision among the following is collision between two billiard balls. In collision of two billiard balls the energy lost is very little approximately zero. hence we can say that the kinetic energy is conserved. since, the kinetic energy is conserved we can say that the collision is elastic
