1.What is magnitude of the free-fall acceleration at a point that is a
distance 2R above the surface of the Earth, where R is the radius of the
Earth?
(A.) 4.8m/s^2 (B) 1.1 m/s^2 (c) 3.3 m/s^2 (D) 2.5m/s^2 (E) 6.5m/s^2
2.A torsional pendulum consists of a solid disk( mass=2.0kg, radius=1.0m )
suspended by a wire attached to a rigid support. The body oscillates about
the support wire. If the torsion constant is 16N.m.
What is the angular frequency(in rad/s)?
A.2 B.4 C.6 D.8 E.7
第1題 我同學算B 我算D...不確定哪個是正解..
第2題 算不出題目裡的答-_-...
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