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greater moment of inertia I ? (A) (B) 1kg
1kg 1kg 1m !"#$%&' ()*
1kg 1kg 4 Page 5 +,-./.01.-2 345 +/367.!.78 10. A wheel (I = 1 M R2 ) with radius R = 0.1 m and a mass of 2 kg is
rolling along a street at 5 m/s.
3 (a) What is the angular velocity ω of the wheel? 2kg
3 (b) 3 11. 10 cm Find the wheel’s kinetic energy; show your work.
A) 12.5 J B) 25 J C) 37.5 J D) 50 J If you start with a pendulum (*), you can decrease
its frequency by
A) making its string longer
B) increasing its mass
C) starting it from a larger angle
D) all of these E) none of these Page 6 (*) (A) (B) (C) 12. The ﬁgure shows a 10 kg cart attached to a spring, and
oscillating back and forth. At t = 0 s the spring is maximally compressed (5 cm shorter than normal) and the cart
is stationary. At t = 1 s the spring is its equilibrium length,
and at t = 2 s the cart is once again stationary because the
spring is maximally extended (5 cm longer than normal).
3 (a) What is the frequency f of this oscillation?
3 (b) At t = 2...
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This note was uploaded on 01/15/2014 for the course PHYSICS 2130 taught by Professor Scotthill during the Spring '12 term at Toledo.
- Spring '12