Question

Three forces are applied to the object below. The bar is 1 m long. Find the net torque about the center. (8 points)

F1 = 16 N at 60° at left end

F2 = 10 N at 40° at center

F3 = 8 N at 30° at right end

Answer #1

A force table applies three forces to a ring in the center of
the table. When the forces are balanced, the ring is stationary in
the center of the table. The net force equation
F1+F2+F3=Fnet becomes
F1+F2+F3=0 since a stationary
object has no net force acting on it. This equation is true for the
cartesian components as well:
F1x+F2x+F3x=0
F1y+F2y+F3y=0
For each of the three problems below, calculate the force F3
that balances the table with the given F1 and...

Three forces acting on an object are given by
F1 = (−1.9î +
6.25ĵ) N,
F2 = (4.60î −
2.4ĵ) N,
and
F3 = (−50î) N.
The object experiences an acceleration of magnitude 3.90
m/s2.
(a) What is the direction of the acceleration?
(b) What is the mass of the object?
(c) If the object is initially at rest, what is its speed after
17.0 s?
(d) What are the velocity components of the object after 17.0 s?
(Let the...

Three forces acting on an object are given by F1 = (−1.55î +
7.15ĵ) N, F2 = (5.10î − 1.4ĵ) N, and F3 = (−43.5î) N. The object
experiences an acceleration of magnitude 3.55 m/s2.
a. What is the direction of the acceleration?
(Counterclockwise from the x-axis)
b. What is the mass of the object? (kg)
c. If the object is initially at rest, what is its speed after
17.0 s?
d. What are the velocity components of the object...

The gate in the figure below, which is 2.00 m wide and 1.00 m
tall, is supported by hinges and a guy wire. Find the torque
resulting from each of the following forces about an axis through
point P. (Torque is positive if its direction is counterclockwise
and negative if its direction is clockwise.) F1 = 68.9 N F2 = 78.5
N F3 = 168 N F4 = 112 N
Figure seen here: http://imgur.com/Dy4MMV7

(PLEASE COMPLETE ALL PARTS OF THE QUESTION)
A uniform thin rod of mass m = 2.9 kg and
length L = 1.9 m can rotate about an axle through its
center. Four forces are acting on it as shown in the figure. Their
magnitudes are F1 = 5.5 N,
F2 = 2.5 N, F3 = 11 N and
F4 = 19.5 N. F2 acts a
distance d = 0.23 m from the center of mass.
A) Calculate the magnitude τ1...

A uniform solid disc of radius 1m and mass 3kg is subjected
simultaneously to three external forces. Take the center of the
disc as the origin of the x-y coordinate system. The ﬁrst force ~
F1 = 3ˆy N is applied at ~r1 = −1ˆy m. The second force ~ F2 = 2(ˆ
y−ˆ x),N is applied at ~r2 = 1ˆxm. The third force ~ F3 = −4ˆy N is
applied at ~r3 = −1ˆxm. The moment of inertia of...

A
200 Kg block has three forces applied to it at the same time: F1 =
30.0 N force at 40.0 degrees, F2 =150 N force at 95.0 degrees,
& F3 = 75.0 N force at 206.0 degrees. (Angles measured
counterclockwise from positive x-direction) There is no
gravitational force.
a. Find the x & y components of the net force on the
block
b. Find the magnitutude and direction of the net force.
c. The block was initially at rest;...

A 200 kg block has three forces applied to it at the same time:
F1 = 30.0 N force at 40.0°,
F2= 150 N force at 95.0°, and
F3 = 75.0 N force at 206.0°. (All
angles are measured counterclock-
wise from the positive x -direction.) There is no
gravitational force.
a. Find
the x and y components of the net force on the block.
b. Find the
magnitude and direction of the net force.
c. The
block was initially at rest; after...

A 200 kg block has three forces applied to it at the same time:
F1 = 30.0 N force at 40.0°,
F2= 150 N force at 95.0°, and
F3 = 75.0 N force at 206.0°. (All
angles are measured counterclock-
wise from the positive x -direction.) There is no
gravitational force.
a. Find
the x and y components of the net force on the block.
b. Find
the magnitude and direction of the net force.
c. The
block was initially at rest; after...

A 200 kg block has three forces applied to it at the same time:
F1 = 30.0 N force at 40.0°,
F2= 150 N force at 95.0°, and
F3 = 75.0 N force at 206.0°. (All
angles are measured counterclock-
wise from the positive x -direction.) There is no
gravitational force.
a. Find
the x and y components of the net force on the block.
b. Find
the magnitude and direction of the net force.
c. The
block was initially at rest; after...

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