ICSE CLASS X Boards Revison MCQs with Solutions | Physics MACHINES Chapter 3 (BLOCK AND TACKLE) | 2021 Semester 1

 

 Q1. A block and tackle system has a VR = 5. Rahul exerts a pull of 150 kgf. What is the maximum load he can raise with this pulley system if it's efficiency = 75%.

Q2. A pulley system has MA = 4. If a load of 10 kgf is pulled up a distance of 2 m in 10 s, calculate Power developed by the Effort.

Q3. The MA of a pulley is 5 and its efficiency is 80%. It is used to lift a load of 200 kgf to a height of 20m.

i) What is the Effort required?

ii) What is the VR ?

iii) What is distance moved by Effort ?