It’s the gravity pull of the sun that makes them spin around 360 degrees
It’s all so why they say In a billion years the sun will smash into the sun
-facts :)
Answer:
W = 181.26 J
Explanation:
Given that,
The force acting on the cart, F = 20 N
It is at an angle of 25 degrees above the horizontal to move a crate a distance of 10m across the floor.
We need to find work done by the student. The work done by the student is given by :
So, the required work done is 181.26 J.
As per the question the length of the string is given as 2 metre.
A ball is attached to the string.
The ball is taken above the head and the ball starts swinging.
Swinging motion of a body may be oscillatory or circular. Here the motion is circular.
Here the length of the string will be considered as the radius of the circular path. we are asked to calculate the distance traveled by the ball in each circular rotation.
As the motion is circular, the path covered by the ball in each rotation will be equal to the circumference of the circle.
The circumference of the circle is given as
where C is the circumference.
hence C=2×3.14×2 metre
=.12.56 metre.
Hence distance covered by the ball in each circular rotation is 12.56 metre.
Here the displacement is zero. one should not be confused between distance and displacement.
Answer:
a.
b.
Explanation:
The computation is shown below:
data provided in the question
The initial angular velocity = 0 rev/s,
f = Final angular velocity = = 382000 rpm i.e = = 6,366.67
And time = t = 3.0s
Based on the above information
a. For angular acceleration of drill
b. For the number of revolutions
We simply applied the above formulas for determining each parts