Answer : T = 2 s and Speed = 6.28 m/s.
Explanation :
It is given that,
Mass of the ball, m = 10 kg
Radius of the circle, r = 2 m
The ball makes 30 revolutions per minute. So, frequency is given by :
We know that time period is defined as the reciprocal of frequency i.e.
So, the time period for the ball to go around once is 2 s.
Now, speed is defined as distance travelled per unit time. Distance travelled by ball in circular path is equal to the circumference of the circle.
Speed of the ball is 6.28 m/s.
D is incredibly biased and is a leading question, and overall it is a poor excuse for any sort of unbiased surveying.
It is correct because the water level will be different when the statue fall into it the water level will be higher . it is because it is named by displacement
u subtract the the water level of the pond before the statue fall into it and after, this will get the volume of the statue.
Answer:
W= 638.1 J
Explanation:
As we know that
Work done is the area of the force and displacement diagram.
W=∫F.dx
W=Work
F=force
dx=Elemental displacement
From the diagram ,area A
A= 60 x 7.09 + 1/2 x 60 x 7.09
A= 638.1 J
So the work W
W= 638.1 J
Is there supposed to an attachent like a pic or somthing?
