Class 10 ICSE Physics Machines Boards Questions
Here we provide Class 10 physics important notes,board questions and predicted questions with Answers for chapter Machines. These important notes,board questions and predicted questions are based on ICSE board curriculum and correspond to the most recent Class 10 physics syllabus. By practising these Class 10 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 10 Board examinations.
2020
Q1
A block and tackle system of pulleys has velocity ratio 4.
(i) Draw a neat labelled diagram of the system indicating clearly the points of application and direction of load and effort.
(ii) What will be its V.R. if the weight of the movable block is doubled?
solutions
(i) Draw a neat labelled diagram of the system indicating clearly the points of application and direction of load and effort.
(ii) What will be its V.R. if the weight of the movable block is doubled?
solutions
Q2
(i) Identify the class of the lever shown in the diagram below:
(ii) How is it possible to increase the M.A. of the above lever without increasing its length?
solutions
(ii) How is it possible to increase the M.A. of the above lever without increasing its length?
solutions
2019
Q3
The diagram below shows a claw hammer used to remove a nail:
(i) To which class of lever does it belong?
(ii) Give one more example of the same class of lever mentioned by you in (i) for which the mechanical advantage is greater than one.
solutions
(i) To which class of lever does it belong?
(ii) Give one more example of the same class of lever mentioned by you in (i) for which the mechanical advantage is greater than one.
solutions
Q4
The diagram below shows a pulley arrangement:
(i) Copy the diagram and mark the direction of tension on each strand of the string.
(ii) What is the velocity ratio of the arrangement?
(iii) If the tension acting on the string is T, then what is the relationship between T and effort E?
(iv) If the free end of the string moves through a distance x, find the distance by which the load is raised.
solutions
(i) Copy the diagram and mark the direction of tension on each strand of the string.
(ii) What is the velocity ratio of the arrangement?
(iii) If the tension acting on the string is T, then what is the relationship between T and effort E?
(iv) If the free end of the string moves through a distance x, find the distance by which the load is raised.
solutions
2018
Q5
The diagram below shows a lever in use:
(i) To which class of levers does it belong?
(ii) Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the lever?
solutions
(i) To which class of levers does it belong?
(ii) Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the lever?
solutions
Q6
(i) Draw a diagram to show a block and tackle pulley system having a velocity ratio of 3 marking the
direction of load(L), effort(E) and tension(T).
(ii) The pulley system drawn lifts a load of 150 N when an effort of 60 N is applied. Find its mechanical advantage.
(iii) Is the above pulley system an ideal machine or not?
solutions
(ii) The pulley system drawn lifts a load of 150 N when an effort of 60 N is applied. Find its mechanical advantage.
(iii) Is the above pulley system an ideal machine or not?
solutions
2017
Q7
Why is Jack screws provided with the long arm?
solutions
solutions
Q8
Which class of lever will always have MA > 1 and why ?
solutions
solutions
Q9
A boy uses a single fixed pulley to lift a load of 50 Kgf to some height. Another boy uses a single
movable pulley to lift the same load to the same height. Compare the effort applied by them. Give a
reason to support your answer.
solutions
solutions
Q10
A pulley system with VR = 4 is used to lift a load of 175 kgf through a vertical height of 15 m. The
effort required is 50 kgf in the downward direction. (g = 10 N kg-1) Calculate:
(i) Distance moved by the effort.
(ii) Work done by the effort.
(iii) M.A. of the pulley system.
(iv) Efficiency of the pulley system.
solutions
(i) Distance moved by the effort.
(ii) Work done by the effort.
(iii) M.A. of the pulley system.
(iv) Efficiency of the pulley system.
solutions
Q11
From the diagram given below, answer the questions that follow:
(i) What kind of pulleys are A and B?
(ii) State the purpose of pulley B.
(iii) What effort has to be applied at C to just raise the load L=20kgf? (Neglect the weight of pulls) and friction.
solutions
(i) What kind of pulleys are A and B?
(ii) State the purpose of pulley B.
(iii) What effort has to be applied at C to just raise the load L=20kgf? (Neglect the weight of pulls) and friction.
solutions
Q12
(i) An effort is applied on the bigger wheel of a gear having 32 teeth. It is used to turn a wheel
of 8 teeth. Where is it used?
(ii) A pulley system has three pulleys. A load of 120N is overcome by applying an effort of 50N. Calculate the Mechanical Advantage and Efficiency of this system.
solutions
(ii) A pulley system has three pulleys. A load of 120N is overcome by applying an effort of 50N. Calculate the Mechanical Advantage and Efficiency of this system.
solutions
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