please make sure the answer are correct. N eed it ASAP thanks! ive Question 1 it

Question

please make sure the answer are correct. N

eed it ASAP thanks!

ive Question 1 its. The figure provided shows three points on a steadily rotating wheel. Which statement below is true for the angular velocity of each point? All points on the wheel have the same angular velocity Points 1 and 2 have the same angular velocity while point 3 has a larger angular velocity Points 1 and 2 have the same angular velocity while point 3 has a smaller angular velocity Points 1,2 and 3 have differing angular velacities.

Explanation / Answer

Q.1

We know that

Angular velocity w=r×v here. v -velocity , r - radius

In this case velocity is constant at each point. But r is different. For

1 and 2 r- is same so angular velocity will be same. Radius of 3 is greater than 1&2. W will be greater than 1&2.

Answer is

Point 1&2 have same angular velocity while point 3 has a larger angular velocity.

Q-2

Here V and R direction is constant. So W will be positive.

Since slowing down Velocity is decreasing so W will decrease. Hence angular acceleration (w2-w1/t) will be NEGATIVE. Since w2 is less than w1.

Answer is c

Angular velocity is positive and angular acceleration is negative.

Q-3

At end point Velocity is zero . Since W =V×R =0

Answer is C

The angular velocity is zero.

Q-4

We know that

Ac( centripetal acceleration) = v^2/r

For a Ac =v^2/r

b-. Ac= 4v^2/r

c -. Ac=v^2/r

d-. Ac=v^2/2r

e -. Ac=4v^2/2r =2v^2/r

Comparing and second largest is

Only e. is answer.

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