Get premium membership and access questions with answers, video lessons as well as revision papers.
Taking moments about O. Then, clockwise moments = effort × 200 cm.
Anticlockwise moments = 200 × 30 cm.
Effort = (200 × 30)/ 200 = 30 N.
Mutiso answered the question on October 11, 2018 at 18:57
- 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)
- A drop of olive oil, whose volume is 0.12 mm3, was placed on a surface of clean water.The oil spread and formed a patch of...(Solved)
A drop of olive oil, whose volume is 0.12 mm3, was placed on a surface of clean water.
The oil spread and formed a patch of area 6.0 × 104 mm2. Estimate the size of the olive oil.
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)
- Give the reading from the vernier calipers shown on the diagram below(Solved)
Give the reading from the vernier calipers shown on the diagram below.
Date posted: October 11, 2018. Answers (1)
- What is the reading of the vernier calipers shown below?(Solved)
What is the reading of the vernier calipers shown below?
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)
- Outline ways in which a magnet can lose its magnetism(Solved)
Outline ways in which a magnet can lose its magnetism
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)