• Member
• Recent Posts

Admin

Latest posts by Admin (see all)

• Which of the following groups of physical properties increase from… - 02/05/2023
• Which of the following diagrams represents correctly an n-p-n transistor? - 02/05/2023
• 12.0g of a mixture of potassium carbonate and potassium chloride were - 02/05/2023

Figure 6 represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. if the efficiency of the machine is 40%, then the value of W is

A. 28.0N

B. 48.0N

C. 288.0N

D. 50.0N

QUICK ANSWER…

D

DETAILS…  

This problem is a repeated question, (2018 JAMB-UTME physics question 10) we resolved it HERE

Now for the right answer to the above question:

1. A is not the right answer.
2. B is incorrect.
3. C is incorrect.
4. D is correct.

KEY-POINTS…

You may please note this/these:

• Velocity ratio of a block and tackle pulley system is exactly equal to the number of pulleys in the machine.

You are free to add your own answers below this page to assist others improve their learning.

You can also click the golden ASK A QUESTION BOTTON down this page to raise new related questions… OUR COMMUNITY OF EXPERTS WILL BE MORE THAN HAPPY TO TACKLE IT…

/ culled from 2020 JAMB-UTME physics past question 34 /