Question

The drawing shows two identical systems of objects; each consists of the same three small balls connected by massless rods. In both systems the axis is perpendicular to the page, but it is located at a different place, as shown. The same force of magnitude F is applied to the same ball in each system (see the drawing). The masses of the balls are m1 = 8.2 kg, m2 = 5.3 kg, and m3 = 7.7 kg. The magnitude of the force is F = 463 N. (a) For each of the two systems, determine the moment of inertia about the given axis of rotation. (b) Calculate the torque (magnitude and direction) acting on each system. (c) Both systems start from rest, and the direction of the force moves with the system and always points along the 4.00-m rod. What is the angular velocity of each system after 5.33 s? (a) IA = IB = (b) ?A = ?B = (c) ?A = ?B = GO Tutorial

Answer #1

The drawing shows two identical systems of objects; each
consists of the same three small balls connected by massless rods.
In both systems the axis is perpendicular to the page, but it is
located at a different place, as shown. The same force of magnitude
F is applied to the same ball in each system (see the drawing). The
masses of the balls are m1 = 9.4 kg, m2 = 6.9 kg, and m3 = 7.2 kg.
The magnitude of...

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A has mass mA = 2.6 kg and is
traveling to the left, while ball B has mass
mB = 1.3 kg and is traveling to the right. The
balls are shown just before the collision in the figure
below.
(a) Which ball has the larger momentum (in magnitude) before the
collision?
Ball A
Ball B
Both balls have...

Three small balls of mass 3.6 kg, 2.4 kg, and 3.9 kg are
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x-axis, which is between the first and second balls and a distance
2.9 m from the first ball, at a rotational speed 2.6 s-1.
(a)What is the distance of...

Two Styrofoam balls have the same charge. Each ball has an
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initially separated by a distance, d = 1.9 m. The Coulomb
constant is k = 8.988 × 109 N
m2/C2.
Part (a) Write an expression for the charge on one of the balls,
Q, in terms of the charge on a proton e and the
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Part (b) What is the magnitude of the force between the...

Two horizontal, parallel conductors are connected to each other
at the left end via an ammeter of internal resistance of r = 2 Ω. A
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can slide (no friction) along the horizontal rails. The whole
system is inside a uniform magnetic field of magnitude 2 T and
direction perpendicular to the plane formed by the two parallel
conductors (i.e., pointing into the...

1. Dynamics and artificial gravity.
The space station has two thrusters pointed in opposite
directions. They operate by expelling propellant at high speed. The
effect is that there is a force of magnitude F0 on the
two ends of the space station in opposite directions, which causes
the entire object to start rotating. The thrusters will stop firing
when the artificial gravity created on the space station (described
below) reaches the required value.
Upward force, magnitude F0
Downward force, magnitude...

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