Question

1.Through what angle in degrees does a 33rpm record turn in 0.16s?

A.46°

B.74°

C.31.6°

D.63°

2.What is the weight of a 1.0 kg peanut butter jar on the surface of a planet that has the same mass as the earth but twice the radius of the earth?

A.4.9 N

B.2.5 N

C.19.6 N

D.9.8 N

3.Suppose we want a satellite to revolve around the Earth 5 times a day. What should the radius of its orbit be? (Earth, M = 5.98 × 1024 kg, R = 6.37 × 106 m)

A.2.11 × 107 m

B.1.44 × 107 m

C.0.69 × 107 m

D.7.22 × 107 m

4. A force of 16.88N is applied tangentially to a wheel of radius 0.340m and gives rise to an angular acceleration of 1.20rad/s^2 Calculate the rotational inertia of the wheel.

A.4.78 kg ∙ m2

B.7.17 kg ∙ m2

C.5.98 kg ∙ m2

D.3.59 kg ∙ m2

Answer 1