clockwise moment about pivot = Anticlockwise moment about pivot
F x 2.5 Sin 30 = 2.5 x 20
F = $\frac{2.5 x 20}{2.5 sin 30^o}$ = 40 N
johnmulu answered the question on April 18, 2017 at 12:35
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Figure 4 shows a uniform metre rule of weight I N with two weights of 0.18 N and 0.12 N suspended from its ends.
(Solved)
Figure 4 shows a uniform metre rule of weight I N with two weights of 0.18 N and 0.12 N suspended from its ends.
Determine how far from the 0.18 N weight a pivot should be placed in order to balance the meter rule
Date posted:
April 18, 2017
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Answers (1)
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Figure 9 shows a uniform light bar one meter in length in equilibrium under the action of forces F1, F2, F3 and F4. All the forces are in the same plane. Use the information on the figure to answer questions a) and b)
(Solved)
Figure 9 shows a uniform light bar one meter in length in equilibrium under the action of forces F1, F2, F3 and F4. All the forces are in the same plane. Use the information on the figure to answer questions
Name one set of forces on the figure that constitutes a couple
Date posted:
April 18, 2017
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Answers (1)
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(Solved)
Determine the moment of the couple shown in Figure 10.
Date posted:
April 18, 2017
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Answers (1)
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Fig. 2 shows a rigid body acted upon by a set of forces. The magnitudes of the forces are as follows: F1 = 3N, F2 = 6N, F3 = 3N, F4 = 4N, F5 = 3N and F6 = 3N.
(Solved)
Fig. 2 shows a rigid body acted upon by a set of forces. The magnitudes of the forces are as follows: F1 = 3N, F2 = 6N, F3 = 3N, F4 = 4N, F5 = 3N and F6 = 3N.
Identify the couple among these forces.
Date posted:
April 18, 2017
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Answers (1)
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Fig. 5 shows a wheel W pivoted at its centre, O and held stationary by string and a spring. The tension in the string is T and the force on the springs is F. Use this information to answer questions 2 and 3
(Solved)
Fig. 5 shows a wheel W pivoted at its centre, O and held stationary by string and a spring. The tension in the string is T and the force on the springs is F. Use this information to answer questions a) and b)
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Date posted:
April 18, 2017
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Answers (1)
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The diagram in Fig. 5 shows a beam of negligible weight balanced by a constant forces P and Q.
(Solved)
The diagram in Fig. 5 shows a beam of negligible weight balanced by a constant forces P and Q.
Derive the relations
hip between x and y
Date posted:
April 18, 2017
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Answers (1)
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Figure 1 shows parts of the main scale and vernier scale of a vernier calipers
(Solved)
Figure 1 shows parts of the main scale and vernier scale of a vernier calipers
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Date posted:
April 18, 2017
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Answers (1)
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Figure 1 shows a vernier calipers being used to measure the internal diameter of a tube
(Solved)
Figure 1 shows a vernier calipers being used to measure the internal diameter of a tube
Record the diameter of the tube
Date posted:
April 18, 2017
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Answers (1)
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Figure 1 shows a metal cube of mass 1.75g placed between the jaws of a micrometer screw gauge.
(Solved)
Figure 1 shows a metal cube of mass 1.75g placed between the jaws of a micrometer screw gauge.
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Date posted:
April 18, 2017
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Answers (1)
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Figure 3 shows part of an experimental set up for estimating the diameter of an oil molecule.
(Solved)
Figure 3 shows part of an experimental set up for estimating the diameter of an oil molecule.
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Date posted:
April 18, 2017
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Answers (1)
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Figure 1 shows a micrometer screw gauge being used to measure the diameter of a ball bearing. A magnified portion of the scale is shown
(Solved)
Figure 1 shows a micrometer screw gauge being used to measure the diameter of a ball bearing. A magnified portion of the scale is shown
Date posted:
April 18, 2017
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Answers (1)
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Figure 1 shows a micrometer screw gauge being used to measure the diameter of a metal rod. The thimble scale has 50 divisions
(Solved)
Figure 1 shows a micrometer screw gauge being used to measure the diameter of a metal rod. The thimble scale has 50 divisions
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Date posted:
April 18, 2017
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Answers (1)
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What is the reading on the vernier calipers shown in Figure 1?
(Solved)
What is the reading on the vernier calipers shown in Figure 1?
Date posted:
April 18, 2017
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Answers (1)
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The micrometer screw gauge represented by Fig.1 has thimble scale of 50 divisions. What is the reading shown?
(Solved)
The micrometer screw gauge represented by Fig.1 has thimble scale of 50 divisions. What is the reading shown?
Date posted:
April 18, 2017
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Answers (1)
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Figure 2 shows a soft iron bar AB placed in a coil near a freely suspended magnet.
(Solved)
Figure 2 shows a soft iron bar AB placed in a coil near a freely suspended magnet.
Explain the observation made when the switch is closed.
Date posted:
April 18, 2017
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Answers (1)
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Figure 2 shows a horse – shoe magnet whose poles are labeled and two other magnets near it. Iron nails are attracted to the lower ends of the magnets as shown.
(Solved)
Figure 2 shows a horse – shoe magnet whose poles are labeled and two other magnets near it. Iron nails are attracted to the lower ends of the magnets as shown.
Identify the poles marked X and Y
Date posted:
April 18, 2017
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Answers (1)
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In the set up in Figure 17 the metal rod is made up of steel and iron pieces joined end to end. You are provided with two iron nails.
(Solved)
In the set up in Figure 17 the metal rod is made up of steel and iron pieces joined end to end. You are provided with two iron nails.
Explain how you would use two nails provided to determine which side is iron
Date posted:
April 18, 2017
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Answers (1)
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Figure 7 shows how magnets are stored in pairs with keepers at the ends
(Solved)
Figure 7 shows how magnets are stored in pairs with keepers at the ends. Explain how this method of storing helps in retaining magnetic longer
Date posted:
April 18, 2017
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Answers (1)
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In an experiment to magnetize two substances p and Q using electric currents, two curves (graphs) were obtained as shown in fig. 1
(Solved)
In an experiment to magnetize two substances p and Q using electric currents, two curves (graphs) were obtained as shown in fig. 1
Using this information in Fig. 1 explain the difference between the substances P and Q with reference to the domain theory
Date posted:
April 18, 2017
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Answers (1)
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Figure 4 shows the cross-section of a dry cell. Use the information on the figure to answer question a) and b)
(Solved)
Figure 4 shows the cross-section of a dry cell. Use the information on the figure to answer question a) and b)
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Date posted:
April 18, 2017
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Answers (1)