how many revolutions are completed by a top spinning with a constant angular velocity of 3pi radians during a 20 sec time interv
1 answer:
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Answer:
10.77m
Explanation:
The elastic potential energy of the spring when compressed with the mass is converted to the kinetic energy of the mass when released. This ie expressed in the following equation;
where k is the force constant of the spring, e is the compressed length, m is the mass of the block and u is the velocity with which the block leaves the spring after being released.
If we make u the subject of formula from equation (1) we obtain the following;
Given;
e = 0.105m,
k = 4825N/m,
m = 0.252kg,
u = ?
Substituting all values into equation (2) we obtain the following;
The maximum height attained is then obtained from the third equation of motion as follows, taking g as
v = 0m/s
Hence
Answer:
The magnetic field strength is
Explanation:
From the question we are told that
The current is
The number of turns is
The radius is
The magnetic filed is
Generally the magnetic field strength is mathematically represented as
=>
=>