Physics, asked by iamtanwitaputu23, 4 hours ago

A block and tackle has 5 pulleys . If its efficiency is 60% then MA will be

Answers

Answered by surywanshiprem6

0

Answer:

Correct option is

B

90%

As we know that efficiency (η) =

velocity ratio

mechanical advantage

Mechanical Advantage(M.A) =

effort

load

=

1000

4500

= 4.5

Velocity Ratio(V.R) = No. of pulleys used = 5

Therefore efficiency η =

5

4.5

×100% = 90%

Was this answer helpful?

Previous Question

Next Question

Similar questions

English, 2 hours ago

write a story on journey the of cotton fabric. (please make it long)...

Hindi, 2 hours ago

2) नेताजी का नम्मा कहानी किसके बारे में.. क) सुभाष चंद्र बोस के बारे में ब) सुभाष चंद्र बोसी मर्ति के बारे में ग) सुभाष चंद्र बोगनी मनिपर लगे मेरे बारे में घ) हालदार गाहय...

Social Sciences, 3 hours ago

Mention the circumstances after the French Revolution in which economic change was necessary.

Math, 4 hours ago

3⁸ x a⁶ / 9³a³ solve it...

English, 4 hours ago

use एक at leave him. Even Yumi revolts. But human considerations overpower all other aderations. He performs an operaton on Tom and helps him in escaping to freedom अमेरिकन युद्धबंदी मरती हुई अवस्था में तट पर बहकर आ जाता है। वह डॉ. सदाओ की सीढ़ियों फेंक दिया जाता है। डॉ. सदाओ के लिए चुनाव करना वास्तव में ही कठिन है। क्या वह उसे कौज को ओउपदे या उसे एक डॉक्टर की तरह उसके जीवन की रक्षा करनी चाहिए?

Science, 8 months ago

4. Luminous intensity is the intensity of a) laser light c) visible light b) UV light d) IR light...

Math, 8 months ago

$\sqrt{ \sqrt{64 - \sqrt{60} } }$ ...

Math, 8 months ago

Write the numeral using commas between periods, Seven millions eight thousands five *...