A wheel (radius = 12 cm) is mounted on a frictionless, horizontal axle that is perpendicular to the wheel and passes through the center of mass of the wheel. A light cord wrapped around the wheel supports a 0.40-kg object. If released from rest with the string taut, the object is observed to fall with a downward acceleration of 3.0 m/s2 . What is the moment of inertia (of the wheel) about the
given axle?
a. 0.023 kg×m2
b. 0.013 kg×m2
c. 0.020 kg×m2
d. 0.016 kg×m2
e. 0.035 kg×m2
B
You might also like to view...
A child and an adult are walking. Their legs swing like physical pendulums and both swing through the same maximum angle. The adult is 1.5 times as tall as the child, and all their dimensions are scaled proportionately
They also have the same mass per unit volume. If the walking speed of the adult is 1.3 m/s, what is the walking speed of the child?
When white light shines through a diffraction grating, the blue fringes are ________ the central bright spot than the red fringes.
What will be an ideal response?
A certain speed boat weighs 4,900 N. It can accelerate from 0 to 20 m/s in 5 seconds. (a) What is the mass of the boat? (b) What is the acceleration? (c) How large is the net force acting on the boat?
Light of wavelength 439 nm is incident on a metallic surface with a resultant photoelectric stopping potential of 1.2 V. What is the work function of the metal? (h = 6.63 × 10^?34 J?s, c = 3.00 × 10^8 m/s, 1 eV = 1.60 × 10^?19 J, and 1 nm = 10?9 m)
a. 1.63 eV b. 2.83 eV c. 4.03 eV d. 0.82 eV e. 2.02 eV