Question
In: Physics
A rectangular loop is made by a metal bar that slides down a set of parallel...
A rectangular loop is made by a metal bar that slides down a set of parallel rails of negligible resistance in a vertical gravitational field g. The rails are connected together by a third rail of negligible resistance The resulting loop is in a uniform, vertical magnetic field B. First assume there is no friction between the bar and the rails. (a) Does the bar acquire a constant velocity and if so what is it? (b) Now take the coefficient of kinetic friction between the bar and the rails to be µk. In this case does the wire acquire a constant velocity and if so what is it? (c) Show how your answers in (a) and (b) are, or are not, consistent with the principle of the conservation of energy. (c) If the direction of B is reversed, do your answers in (a) or (b) change? Explain
Solutions
genius_generous answered 2 years agoRelated Solutions
In a local bar, a customer slides an empty beer mug down the counter for a...
In a local bar, a customer slides an empty beer mug down the
counter for a refill. The height of the counter is 1.19 m. The mug
slides off the counter and strikes the floor 0.90 m from the base
of the counter.
(a) With what velocity did the mug leave the counter?
(b) What was the direction of the mug's velocity just before
it hit the floor?
In a local bar, a customer slides an empty beer mug down the counter for a...
In a local bar, a customer slides an empty beer mug down the
counter for a refill. The height of the counter is 1.44 m. The mug
slides off the counter and strikes the floor 1.60 m from the base
of the counter.
(a) With what velocity did the mug leave the counter?
(b) What was the direction of the mug's velocity just before it
hit the floor? ° (below the horizontal)
In a local bar, a customer slides an empty beer mug down the counter for a...
In a local bar, a customer slides an empty beer mug down the
counter for a refill. The height of the counter is 1.10 m. The mug
slides off the counter and strikes the floor 0.20 m from the base
of the counter.
(a) With what velocity did the mug leave the counter?
____________m/s ????
(b) What was the direction of the mug's velocity just before it hit
the floor?
_____________
A mass m slides down a frictionless ramp and approaches a frictionless loop with radius R....
A mass m slides down a frictionless
ramp and approaches a frictionless loop with radius
R. There is a section of the track
(between the ramp and the loop) with length
2R that has a kinetic friction
coefficient of 0.5. From what height h
must the mass be released to stay on the track? No figure.
1.5R 2.5R 3.5R 4.5R or 5.5R
A cart of mass m1 = 11 kg slides down a frictionless ramp and is made...
A cart of mass m1 = 11 kg slides down a frictionless ramp and is
made to collide with a second cart of mass m2 = 24 kg which then
heads into a vertical loop of radius 0.25 m (a) Determine the
height h at which cart #1 would need to start from to make sure
that cart #2 completes the loop without leaving the track. Assume
an elastic collision. (b) Find the height needed if instead the
more massive...
sketch a 9 bar parallel chord plane truss with rectangular panels, having 2 diagonal bars, 3...
sketch a 9 bar parallel chord plane truss with rectangular
panels, having 2 diagonal bars, 3 vertical bars, and two bars in
each chord(too and bottom). Each panel is 3ft high and 4ft wide and
the two diagonal bars are parallel. the truss is supported with a
roller and a hinge at the corners at the base. a vertical downward
load of 60k is applied at the top middle joint. identify all zero
force bats and show the reactions at...
Set up a for loop to print values from n down to 1 with at most...
Set up a for loop to print values from n down
to 1 with at most 5 values per line. For example, when n is 7 then
the output is shown below:
7
6 5 4 3
2 1
C++ code
The plane of a rectangular loop of wire with a width of 5.0 cm and a...
The plane of a rectangular loop of wire with a width of 5.0 cm
and a height of 8.0 cm is parallel to a magnetic field of magnitude
0.22 T . The loop carries a current of 6.7 A .
What torque acts on the loop?
What is the magnetic moment of the loop?
What is the maximum torque that can be obtained with the same
total length of wire carrying the same current in this magnetic
field?
A loop of wire is horizontal. A bar magnet is pushed toward the loop from below,...
A loop of wire is horizontal. A bar magnet is pushed toward the
loop from below, along the axis of the loop, as shown in Figure
Q25.15.
a. In what direction is the current in the loop? Explain
b. Is there a magnetic force on the loop? If so, in which
direction? Explain
c. Is there a magnetic for on the magnet? If so, in which
direction?
A bead slides down along a piece of wire that is in the shape of a...
A bead slides down along a piece of wire that is in the shape of
a helix. The helix lies on the surface of a vertical cylinder of
radius r, and the vertical distance between turns is d. (a)
Ordinarily when an object slides downhill under the influence of
kinetic friction, the velocity-independence of kinetic friction
implies that the acceleration is constant, and therefore there is
no limit to the object’s velocity. Explain the physical reason why
this argument fails...
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