ISOTOPES (C) are atoms with the same number of protons, but different numbers of neutrons.
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Answer:
Explanation:
Let T be the tension
For linear motion of hoop downwards
mg -T = ma , m is mass of the hoop . a is linear acceleration of CG of hoop .
For rotational motion of hoop
Torque by tension
T x R , R is radius of hoop.
Angular acceleration be α,
Linear acceleration a = α R
So TR = I α
= I a / R
a = TR² / I
Putting this value in earlier relation
mg -T = m TR² / I
mg = T ( 1 + m R² / I )
T = mg / ( 1 + m R² / I )
mg / ( 1 + R² / k² )
Tension is less than mg or weight because denominator of the expression is more than 1.
The amount of energy is ALWAYS conserved based on the law of conservation of energy. Therefore, the amount of energy will remain the same.
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Answer:
a.=4.78 m/s2
b. the thread will remain vertical
Explanation:
a.
For jet acceleration as you know,
Weight due to gravity given as
F= w =mg
and body movement with acceleration as
F= ma
Its acceleration of plane
b.
For planes attaining constant velocity
a = 0 and tan∅ = 0
so Ф = 0
hence the thread will be remain vertical
