PHYS 201, FINAL TEST NAME Honor Code: I did not assist anyone or receive any ass

Question

PHYS 201, FINAL TEST NAME Honor Code: I did not assist anyone or receive any assistance in doing this test. SCOREt Signature and Date Qiestions 2: Two coins rotate on a turntable. Coin B is twice as far from the axis as coin A. 1. Which of the following is true with regard to the angular velocity of the coins? A. The angular velocity of A is twice that of B B. The angular velocity of A equals that of B. C. The angular velocity of A is half that of B. D. None of these A B 2. Which of the following is true with regard to the centripetal accelerations of the coins? A. The centripetal acceleration ofA is twicethat ofB. B. The centripetal acceleration of A equals that of B. C. The centripetal acceleration of A is half that of B. D. None of these. Questions 3.4:.Three masses are connected by rods as shown. -3. Find the x center of mass. A. 2.0 m D. 5.0 m B. 2.7 m E. none of these C.4.0 m s kg 4. Find the y center of mass. A. 2.0 m D. 5.0 m B. 2.7 m E. none of these C.4.0 m 2 kg 3 kg x(m) -5. There must be equal amounts of mass on both side of the center of mass of an object. A. True B. False -6. A rigid body is in equilibrium if A, Fn.-O B.tot = 0 C. both A nor B. D. either A or B. E. none of these. -7. Moment of inertia is A. an alternative term for moment arm. B. the point at which all forces appear to act. D. the time at which inertia occurs. C. the rotational equivalent of mass. E. None of these

Explanation / Answer

here,

1)

the angular speed of both A and B remians the same

so the correct option is B) the angular velocity of A equals that of B

2)

as centripital accelration , ac = w^2 * r

as the coin B is at twice distance that of A

the centriptal accelration of B is twice that of A

so the correct option is C)

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.