State the only problem faced with a single movable pulley. How is this problem overcome?

Important Questions on Machines

HARD

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 2 - Machines>QUESTIONS>Q 8

How many movable pulleys are there in a system of

3

pulleys? What is the mechanical advantage and velocity ratio of this system? If efficiency of system is

100 %

, what effort is needed to lift a load of

350 kgf

attached to it?

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 2 - Machines>QUESTIONS>Q 9

How many movable pulleys are there in a system of

4

pulleys? What is the mechanical advantage and velocity ratio of this system? If the efficiency of the system is

80 %

, what effort is required to lift a load of

40 kgf

from this system?

HARD

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 2 - Machines>QUESTIONS>Q 10

The figure given alongside shows a block and tackle system of $4$ pulleys. Draw a string around the pulleys. Show also the position and the direction of the effort to be applied on this string. What is the mechanical advantage and velocity ratio of this system?

Question Image