On Monday while Johnny was getting ready for school, he was in the bathroom holding his comb when he got an itch on his head. Jo
2 answers:
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80 joule is momentarily stored in each spring
<em><u>Solution:</u></em>
Given that,
The coil springs on a car's suspension have a value of k = 64000 N/m
When the car strikes a bump the springs briefly compress by 5.0 cm (.05 m)
By compressing the spring, we apply a force over a distance
As a result we have done work on the spring
Doing work means that we have transferred energy to spring in form of elastic potential
Therefore,
k = 64000 N/m
x = 0.05m
<em><u>The elastic potential energy is given as:</u></em>
Where, "k" is the spring constant and "x" is the displacement
Thus 80 joule is momentarily stored in each spring
Answer:
m = 2,776.95 kg
Explanation:
given,
radius = 1.5 m
mass = 1.19 x 10⁴ Kg
constant speed, v = 1.4 m/s
Resistive force = 1105 N
density of sea water = 1.03 x 10³ kg/m³
Volume of vessel,
v = 14.14 m³
Upthrust,
U = ρ g V
U = 1030 x 9.8 x 14.14
U = 142729.16 N
Since the vessel is moving at a constant speed, the resultant force on it should equal zero.
downward acting forces = upward acting forces
Mg = U + resistive force
M x 9.8 = (142729.16+1105)
M=14676.95 Kg
Mass of water,
m = M - mass of vessel
m = 14676.95 Kg- 11,900 kg
m = 2,776.95 kg