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ICSE Class 10 Physics Question 9 of 20

Solved 2018 Question Paper ICSE Class 10 Physics — Question 3

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Question

Question 5(c)

(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). [4]

(ii) The pulley system drawn lifts a load of 150 N when an effort of 60 N is applied. Find it's mechanical advantage.

(iii) Is the above pulley system an ideal machine or not?

Answer

(i) The block and tackle pulley system with velocity ratio 3 is shown below in which the direction of load (L), effort (E) and tension (T) has been marked:

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). ICSE 2018 Physics Solved Question Paper.

(ii) Given,

L = 150 N,

E = 60 N

Mechanical advantage M.A. = 𝐿E\dfrac{𝐿}{E} = 15060\dfrac{150}{60} = 2.5

(iii) This pulley system is not ideal.