A car starts from rest and after 5.5 seconds it is moving at 30 m/s. What is the value of t? Use one of the following to find th
e answer.
1 answer:
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Answer:
the total energy does not change if the mass is doubled and the amplitude is constant
B. The kinetic and potential energies at a given point in its motion is not affected by the change in mass
Explanation:
The total energy stored by an object-spring balance is the equation above
E= Energy stored in the spring
k= spring constant
A= amplitude
if the mass is doubled ,and amplitude remains constant the energy does not change
also
The total energy is given by the above. if the mass is doubled, the sum of the potential energy and kinetic energy remains the same at a given point and can't be affected by the change
x=displacement from equilibrium
v=velocity of the object
k= spring constant
m=mass of the object
Answer:
the height of the slide is 4.68 m
Explanation:
The top of side to bottom of side is shown by the expression:
where ;
Using Conservation of angular momentum after collision with the vertical bar; we have:
where ;
Then:
Using the approach from conservation of energy for The linear speed of the person after grabbing bar; we have:
where
Then;
where;
= 1.775 m
i.e The final height of the end of the bar and the rider will rise up as the bar swings out to 5.0 m if you make a triangle with the hypotenuse 8.0 m and the bottom 5.0m and then subtract the third side from 8.0 m you get the difference in height from the bar being directly vertical vs the height reached during the swing. = 6.245
8.0 m - x = 8.0 m - 6.245 = 1.755 m which is the final height
h = 4.68 m
Hence, the height of the slide is 4.68 m