Answer: 339.148N
Explanation:
Data
Time (t) = 47s
U = 0m/s
V = 9.5m/s
Mass of B = 540kg
Frictional force on B = 230N
Both boats are connected so if A moves, B moves too.
Acceleration of boat A =?
Using equation of motion,
V = u + at
9.5 = 0 + a*47
a = 9.5 / 47
a = 0.2021 m/s²
The force required to accelerate boat B since it's the same force moving both boats =?
F = Mass * acceleration
F = 540 * 0.2021 = 109.14N
A frictional force of 230N exists on boat B
Total force (Tension) = frictional force + normal force = (109.15 + 230)N = 339.148N
The examples where using conservation of energy to solve a problem is easier than other methods are:
1. Pendulum
2. Nuclear Power Plant
The principle of the conservation of energy says that:
Energy within an isolated system is neither created nor destroyed, it simply changes from one type of energy to another.
1. Pendulum:
As the pendulum swings down:
gravitational potential energy of the pendulum →kinetic energy of the pendulum.
As the pendulum swings up: kinetic energy of the pendulum→ gravitational potential energy of the pendulum.
2. Nuclear Power Plant:
Nuclear energy (from the decay of uranium) → thermal energy of water
→kinetic energy of a turbine →electrical energy + thermal energy (from friction in the turbine and transmission lines)
Learn more about conservation of energy, click here brainly.com/question/13949051
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The answer is 2.66 x 10^8 J.
Answer:
Only there will be a change in density of sun.
Explanation:
As your question says only the radius of sun is decreased and there is no change in the mass. So it means that the center of gravity will be the same and as a result the gravitational force remains the same. Only the density of sun changes as it shrinks.