Question

A 460-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal, 6.00-m-long, uniform, 150-N rod as indicated in the figure below. The left end of the rod is supported by a hinge, and the right end is supported by a thin cable making a 30.0

Answer #1

A 560-N uniform rectangular sign 4.00 m wide and 3.00 m high is
suspended from a horizontal, 6.00-m-long, uniform, 120-N rod as
indicated in the figure below. The left end of the rod is supported
by a hinge and the right end is supported by a thin cable making a
30.0° angle with the vertical. (Assume the cable is connected to
the very end of the 6.00-m-long rod, and that there are 2.00 m
separating the wall from the sign.)...

In the figure, a uniform beam of weight 470 N and length 3.6 m
is suspended horizontally. On the left it is hinged to a wall; on
the right it is supported by a cable bolted to the wall at distance
D above the beam. The least tension that will snap the cable is
1400 N. What value of D corresponds to that tension?

A uniform door (0.79 m wide and 2.0 m high) weighs 113 N and is
hung on two hinges that fasten the long left side of the door to a
vertical wall. The hinges are 2.0 m a part. Assume that the lower
hinge bears all the weight of the door. Find the horizontal
component of the forces, including sign, applied to the door by
(a) the upper hinge and (b) the
lower hinge, taking the direction to the right...

A 3 meter uniform rod with a weight of 1000 N is suspended by
two vertical cables and has a large box (1750 N in weight) tied to
the right hand side. One cable is exactly on the left most end of
rod with a tension of 2000 N. The second cable is 1 m to the right
of the center of mass and has an unknown tension. What angle does
the rod make with the force of the hanging...

A farm gate (Fig. P12.44) is 3.00 m wide and 1.80 m high, with
hinges attached to the top and bottom. The guy wire makes an angle
of 30.0° with the top of the gate and is tightened by a turnbuckle
to a tension of 200 N. The mass of the gate is 40.0 kg. (Assume
that the positive directions are upward and to the right.)
Find the horizontal force exerted by the upper hinge.
What if? What must be...

5. Consider a rectangular ice floe 5.00 m high, 4.00 m long,
3.00 m and wide.
a. (10 Points) What percentage of the ice floe is below the
water line if it floats in sea
water?
b. (6 Points) What percentage of the ice floe is below the level
of the liquid if it floats in
mercury?

A 1,300–N uniform boom at
ϕ = 60.0°
to the horizontal is supported by a cable at an angle
θ = 30.0°
to the horizontal as shown in the figure below. The boom is
pivoted at the bottom, and an object of weight
w = 1,950 N
hangs from its top.
A boom of length l with its bottom end on a pivot is
shown. The boom points up and to the right and makes an angle
ϕ with the...

1. A uniform bar of length 4.7 m and mass 4.4 kg is attached to
a wall through a hinge mechanism which allows it to rotate freely.
The other end of the bar is supported by a rope of length 5.6 m
which is also connected to the wall. What is the tension in the
rope in N?
2. A uniform bar of length 5 m and mass 4.2 kg is attached to a
wall through a hinge mechanism which...

A uniform 1.8-kg rod that is 0.88 m long is suspended at rest
from the ceiling by two springs, one at each end. Both springs hang
straight down from the ceiling. The springs have identical lengths
when they are unstretched. Their spring constants are 36 N/m and 52
N/m. Find the angle that the rod makes with the horizontal.

A uniform, 245-N rod that is 2.10 m long carries a 225-N weight
at its right end and an unknown weight W toward the left end (see
the figure (Figure 1)). When W is placed 46.0 cm from the left end
of the rod, the system just balances horizontally when the fulcrum
is located 69.2 cm from the right end.
W= 71.7 N
If W is now moved 28.1 cm to the right, how far must the fulcrum
be moved...

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