1. A metal rod of length 90 cm has a disc of radius 24 cm fixed rigidly at its centre, as shown. The assembly is pivoted at its centre. Two forces, each of magnitude 30 N, are applied normal to the rod at each end so as to produce a turning effect on the rod. A rope is attached to the edge of the disc to prevent rotation. 90 cm 30 N 24 cm 30 N горе a. State the two conditions necessary for an object to be in equilibrium. b. Calculate the moment produced by the 30 N forces (also known as torque). c. Caleulate the tension T in the rope. 2. A flagpole of mass 25 kg is held in a horizontal position by a cable as shown. The centre of gravity of the flagpole is at a distance of 1.5 m from the fixed end. cable flagpole. 30 1.5 m weight 2.5 m a. Explain what is meant by the centre of gravity of an object. b. Write an equation to represent taking moments about the left-hand end of the flagpole. Use your equation to find the tension 7" in the cable. C. Determine the vertical component of the force at the left-hand end of the flagpole.
1. A metal rod of length 90 cm has a disc of radius 24 cm fixed rigidly at its centre, as shown. The assembly is pivoted at its centre. Two forces, each of magnitude 30 N, are applied normal to the rod at each end so as to produce a turning effect on the rod. A rope is attached to the edge of the disc to prevent rotation. 90 cm 30 N 24 cm 30 N горе a. State the two conditions necessary for an object to be in equilibrium. b. Calculate the moment produced by the 30 N forces (also known as torque). c. Caleulate the tension T in the rope. 2. A flagpole of mass 25 kg is held in a horizontal position by a cable as shown. The centre of gravity of the flagpole is at a distance of 1.5 m from the fixed end. cable flagpole. 30 1.5 m weight 2.5 m a. Explain what is meant by the centre of gravity of an object. b. Write an equation to represent taking moments about the left-hand end of the flagpole. Use your equation to find the tension 7" in the cable. C. Determine the vertical component of the force at the left-hand end of the flagpole.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
100%
![12:07 2 V A O
lll all
53
E Moment_of_force...
1. A metal rod of length 90 cm has a disc of radius 24 cm fixed rigidly at its centre, as shown. The
assembly is pivoted at its centre. Two forces, each of magnitude 30 N, are applied normal to the
rad at each end so as to produce a turning effect on the rod. A rope is attached to the edge of
the disc to prevent rotation.
90 cm
30 N
24 cm
T.
30 N
горе
a. State the two conditions necessary for an object to be in equilibrium.
b. Calculate the moment produced by the 30 N forces (also known as torque).
c. Calculate the tensian T in the rope.
2. A flagpole of mass 25 kg is held in a horizontal position by a cable as shown. The centre of
gravity of the flagpole is at a dista nce of 1.5 m from the fixed end.
cable
flagpole,
30
TI 1.5 m
weight
2.5 m
a. Explain what is meant by the centre of gravity of an object.
b. Write an equation to represent taking moments about the left-hand end of the flagpole. Use
your equation to find the tension 7 in the cable.
C.
Determine the vertical component of the force at the left-hand end of the flagpole.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3561f116-6483-4309-b16e-6222b5f5763a%2Fcd703be0-bbef-437f-8fd5-1dcc4f68daca%2Fxn63xxj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:12:07 2 V A O
lll all
53
E Moment_of_force...
1. A metal rod of length 90 cm has a disc of radius 24 cm fixed rigidly at its centre, as shown. The
assembly is pivoted at its centre. Two forces, each of magnitude 30 N, are applied normal to the
rad at each end so as to produce a turning effect on the rod. A rope is attached to the edge of
the disc to prevent rotation.
90 cm
30 N
24 cm
T.
30 N
горе
a. State the two conditions necessary for an object to be in equilibrium.
b. Calculate the moment produced by the 30 N forces (also known as torque).
c. Calculate the tensian T in the rope.
2. A flagpole of mass 25 kg is held in a horizontal position by a cable as shown. The centre of
gravity of the flagpole is at a dista nce of 1.5 m from the fixed end.
cable
flagpole,
30
TI 1.5 m
weight
2.5 m
a. Explain what is meant by the centre of gravity of an object.
b. Write an equation to represent taking moments about the left-hand end of the flagpole. Use
your equation to find the tension 7 in the cable.
C.
Determine the vertical component of the force at the left-hand end of the flagpole.
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