as a mercury atom absorbs a photon of energy as electron in the atom changes from energy level B to energy level E. calculate th
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The velocity of the tip of the second hand is 0.0158 m/s
Explanation:
First of all, we need to calculate the angular velocity of the second hand.
We know that the second hand completes one full circle in
T = 60 seconds
Therefore, its angular velocity is:
Now we can calculate the velocity of a point on the tip of the hand by using the formula
where
is the angular velocity
r = 15 cm = 0.15 m is the radius of the circle (the distance of the point from the centre of rotation)
Substituting,
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Answer:
The magnitude of the tangential velocity is
The magnitude of the resultant acceleration at that point is
Explanation:
From the question we are told that
The mass of the uniform disk is
The radius of the uniform disk is
The force applied on the disk is
Generally the angular speed i mathematically represented as
Where is the angular displacement given from the question as
is the angular acceleration which is mathematically represented as
The moment of inertial is mathematically represented as
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Considering the equation for angular acceleration
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Considering the equation for angular velocity
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The tangential velocity of a given point on the rim is mathematically represented as
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The radial acceleration at hat point is mathematically represented as
The tangential acceleration at that point is mathematically represented as
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The magnitude of resultant acceleration at that point is
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