a) Let the weight of the rod be ‘W’. W acts at 50 cm mark, therefore taking moments about point of suspension, clockwise moments = W × 0.2 Nm = 0.2W Nm.
Anticlockwise moments = 1.6 × 0.3 = 0.48 Nm.
Using the law of moments, then Anticlockwise moments = clockwise moments
0.48 = 0.2 W,
hence W = 2.4 N
b) Upward forces = downward forces
Downward force = W + 1.6 N
= 2.4 + 1.6 = 4.0 N
Upward force = reading of the spring balance = 4.0 N
Mutiso answered the question on October 12, 2018 at 05:28
-
Study the diagram below and determine the value of X and hence the length of the bar
(Solved)
Study the diagram below and determine the value of X and hence the length of the bar.
Date posted:
October 11, 2018
.
Answers (1)
-
The following bar is of negligible weight. Determine the value of ‘x’ if the bar is balanced.
(Solved)
The following bar is of negligible weight. Determine the value of ‘x’ if the bar is balanced.
Date posted:
October 11, 2018
.
Answers (1)
-
A uniform rod of negligible mass balances when a weight of 3 N is at A, weight of 3 N is at B and a...
(Solved)
A uniform rod of negligible mass balances when a weight of 3 N is at A, weight of 3 N is at B and a weight of W is at C. What is the value of weight W?
Date posted:
October 11, 2018
.
Answers (1)
-
Suppose an oil drop has a volume of 0.10 mm3 and forms a film with a radius of 10 cm. Calculate, the thickness of the...
(Solved)
Suppose an oil drop has a volume of 0.10 mm3 and forms a film with a radius of 10 cm. Calculate, the thickness of the oil film.
Date posted:
October 11, 2018
.
Answers (1)
-
Explain how to measure length using a micrometer screw gauge
(Solved)
Explain how to measure length using a micrometer screw gauge
Date posted:
October 11, 2018
.
Answers (1)
-
Explain how to measure length using vernier caliper
(Solved)
Explain how to measure length using vernier calipers.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe the domain theory of magnetism
(Solved)
Describe the domain theory of magnetism.
Date posted:
October 11, 2018
.
Answers (1)
-
Outline ways of caring for magnets
(Solved)
Outline ways of caring for magnets.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe the methods used to make magnets. Use diagrams where necessary
(Solved)
Describe the methods used to make magnets. Use diagrams where necessary.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe an experiment to charge and discharge a simple secondary cell
(Solved)
Describe an experiment to charge and discharge a simple secondary cell.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe and experiment of making a simple cell
(Solved)
Describe and experiment of making a simple cell
Date posted:
October 11, 2018
.
Answers (1)
-
Describe and experiment for location of an image by the non-parallax method
(Solved)
Describe and experiment for location of an image by the non-parallax method.
Date posted:
October 11, 2018
.
Answers (1)
-
What is the difference between regular reflection and diffuse reflection?
(Solved)
What is the difference between regular reflection and diffuse reflection?
Date posted:
October 11, 2018
.
Answers (1)
-
Explain the applications of rectilinear propagation of light
(Solved)
Explain the applications of rectilinear propagation of light.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe an experiment to show that light travels in a straight line
(Solved)
Describe an experiment to show that light travels in a straight line.
Date posted:
October 11, 2018
.
Answers (1)
-
State the principal features of a thermos flask
(Solved)
State the principal features of a thermos flask.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe experiments to demonstrate convection in liquids; heating water in a beaker and model of hot water system experiment
(Solved)
Describe experiments to demonstrate convection in liquids; heating water in a beaker and model of hot water system experiment
Date posted:
October 11, 2018
.
Answers (1)
-
Describe experiments to show convention in gases; model chimney (smoke box) and revolving paper-vane experiments
(Solved)
Describe experiments to show convention in gases; model chimney (smoke box) and revolving paper-vane experiments.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe an experiment comparing thermal conductivity of metals
(Solved)
Describe an experiment comparing thermal conductivity of metals.
Date posted:
October 11, 2018
.
Answers (1)
-
Describe with aid of diagrams 5 types of thermometers
(Solved)
Describe with aid of diagrams 5 types of thermometers
Date posted:
October 11, 2018
.
Answers (1)