Answer:
8.76762 m
Explanation:
T = Time period = 5.94 seconds
g = Acceleration due to gravity = 9.81 m/s²
L = Length of pendulum = Height of tower
Time period is given by
The height of the tower is 8.76762 m
Define homogeneous.
2 answers:
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Answer:
92867kg
Explanation:
DATA:
mass of the moon ''= 7.36 x
kg
mass of the mini black hole ''=?
universal gravitational constant= 6.67x Nm²/kg²
distance 'r'= 7.47× m
force 'F'= 8170N
Newton's Law of Universal Gravitation is given by:
92867kg
<h2>The work done , when body moves along the plane </h2>
Explanation:
A body is projected from bottom of the inclined plane . When body is going up the plane .
The downward force = m g sinθ is developed due to its weight
As body is moving upwards , the force of friction will act downwards
The force of friction = μ R
here μ is the coefficient of friction ans R is the normal reaction
Thus force of friction f = μ mg cosθ
Let the acceleration upwards is a
The upward force required = m a
Thus m a = mg sinθ + μ mg cosθ
or acceleration a = g ( sinθ + μ cosθ )
The work done in moving upwards W = F S
Thus W = mg ( sinθ + μ cosθ ) S
here S is the displacement on the plane
When body moves down , the force of friction acts upwards
Thus m a = m g ( sinθ - μ cosθ )
The work done W = m g ( sinθ - μ cosθ ) S
As the body is projected with velocity u
which can be calculated by the relation v² - u² = - 2 a X
Here v = 0 at the highest point
Thus u =
here a = g ( sinθ + μ cosθ )
Similarly , when it moves down , the initial velocity u = 0
Thus v² - 0 = 2 a x
or v =
here a = g ( sinθ - μ cosθ )