Answer:
look if its at school
Explanation:
just ask teacher to help because if we say you will not learn
just say to teacher"pls can you help me with this and everything you
don't understand
Answer:
a
b
Explanation:
From the question we are told that
The length of the Chinook salmon is
The mass of the Chinook salmon is
The upward velocity in water is
The upward velocity in air is
Generally from kinematic equations
=>
=>
=>
=>
Generally magnitude of the force F during this interval in N is mathematically represented as
=>
=>
Answer:
(a) The angular displacement of the toy is 18.85 rad.
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(b) The toy's angular velocity is 6.284 rad/min.
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(c) if the counterclockwise rotation is in negative direction, the angular acceleration will be positive when the toy is turned off and vice versa.
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Answer:
30 N
Explanation:
there are two forces act on the bar:
- weight of 1.5 kg mass, w = mg = 15 N
- weight of the bar, wb
for balance,
w * Lw = wb * Lwb
Lw = length of bar from the mass to the pivot
Lwb = lenght of bar from the center of the bar to the pivot
15 * 20 = wb * (50-20)
300 = wb * 30
wb = 300/30 = 30 N