Energy Conservation With Conservative Forces: A stone is released from rest at a height h at the left side of a loop-the-loop, as shown in the figure. There is no appreciable friction from the track or from air resistance. If the radius of the loop is R, what is the minimum height h for which the stone will not fall off the track at the top of the loop?
A. 3.5 R
B. 2.5 R
C. 2.0 R
D. 
R
E. 3.0 R
Answer: B
You might also like to view...
The motion of gas in accretion disks and jets is ____. a. well explained by Einstein's theory of general relativity b. poorly understood, but may depend on magnetism c. well explained by Kepler's laws
d. poorly understood, but may depend on relativity e. well explained by electromagnetic wave theory
The most abundant materials in the solar nebula were
A) hydrogen compounds like water, methane, and ammonia B) hydrogen and helium gases C) metals D) rocks
A disk has a moment of inertia of 3.0 × 10^?4 kg·m2 and rotates with an angular speed of 3.6 rad/s. What net torque must be applied to bring it to rest within 3.6 s?
a. 3.89E–4 N·m b. 3.00E–4 N·m c. 4.32E–4 N·m d. 3.00E–4 N·m e. 1.20E–4 N·m
Water has its ________ density at 4.°C
A) average B) maximum C) minimum