a) What is the period of a pendulum oscillating with an amplitudeof 5.0 cm? (L=1.0 m, m = 0.5 kg)
b) What is the maximum velocity of the bob of the pendulum?
c) What is the energy of the pendulum? Figured out to be 6.1mJ
d) The pendulum's energy loss (due to damping) is restocked in aclock by allowing a 2.0 kg mass to drop 1.0 m in 1 week. What isthe pendulum energy lost during one cycle?
e) Using your answers from (c) and (d) find the percentage ofoscillation (pendulum) energy lost in one cycle due to damping.

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Elin HesselLv2

28 Apr 2019

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What is the energy of a pendulum (L = 1.3 m, m = 0.5 kg)oscillating with an amplitude of 4.0 cm?
in mJ

(b) The pendulum's energy loss (due to damping) is replaced in aclock by allowing a 1.5-kg mass to drop 1.0 m in 1 week. Whatpercentage of the pendulum's energy is lost during one cycle?
please show all work

Just a few questions from a review packet i'm stuck on, anyhelpwould be appreciated!

1) The moment of inertia about its axis is given as .5 mr^2. Ifthiscylinder rolls without slipping the ratio of it's rotationalkineticenergy to it's translational kinetic energy is
a. 2:1
b. 1:1
c. 1:2
d. 1:3

2) An objectâs angular momentum changes by 20 kg,m2/s in 4.0s. Whatmagnitude average torque acted on this object?
A. 2.5 Nâm
B. 5.0 N-m
C. 40 N-m
D. 80 Nâm

3) A solid cylinder of mass 10 kg is pivoted about africtionlessaxis thought the center O. A rope wrapped around theouter radiusR1 = 1.0 m, exerts a force F1 = 5.0 N to the right. Asecond ropewrapped around another section of radius R2 = 0.50 mexerts a forceF2 = 6.0 N downward. (See Fig. 8-1.) What is theangularacceleration of the cylinder?
A) 1.0 rad/s2
B) 0.60 rad/s2 >my guess<
C) 0.40 rad/s2
D) 0.80 rad/s2

4) A solid sphere of mass 1.0 kg and radius 0.010 m starts fromrestand rolls without slipping down a 1.0-m high inclined plane.What isthe speed of the sphere when it reaches the bottom of theinclinedplane?
A) 3.7 m/s >My guess<
B) 4.4 m/s
C) 5.6 m/s
D) 6.3 m/s

5)A railroad car with a mass of 200 kg is going at 10 m/s. A 70kgstunt man drops directly down on it from a distance of 4 mabove.What is the speed of the railroad car after?
a. 4.7 m/s
b. 7.4 m/s
c. 2.8 m/s
d. 10 m/s

6) A projectile is launched with an initial velocity of 60 m/s atanagnle of 30 degrees above the horizontal. How far will itgo?
a. 318 m
b. 160 m
c. 152 m
d. 184 m

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