SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

A string is wound around a hollow cylinder of mass 5 kg and radius 0.5 m. If the string is now pulled with a horizontal force of 40 N, and the cylinder is rolling without slipping on a horizontal surface (see figure), then the angular acceleration of the cylinder will be (Neglect the mass and thickness of the string) :-

a.

12 rad/s2

b.

16 rad/s2

c.

10 rad/s2

d.

20 rad/s2


Question ID - 50396 :-

A string is wound around a hollow cylinder of mass 5 kg and radius 0.5 m. If the string is now pulled with a horizontal force of 40 N, and the cylinder is rolling without slipping on a horizontal surface (see figure), then the angular acceleration of the cylinder will be (Neglect the mass and thickness of the string) :-

a.

12 rad/s2

b.

16 rad/s2

c.

10 rad/s2

d.

20 rad/s2

1 Answer
5876 Votes
3537

Answer Key : (b) -

 

 

40 + f = m(R)  …  (i)

40 × R − f × R = mR2 

40 − f = mR      …  (ii)

 From (i) and (ii)

 = 16



Next Question :

Which one of the following is correct?

Lightning is formed, when

(a)

similar charges of electricity rush towards each other and then get repelled

(b)

clouds strike against impurities in air and the friction burns up these impurities

(c)

strong opposite charges in different clouds break down the resistance offered by intervening air

(d)

water vapour produces electricity in the clouds

 


View Topper Answer

We hope we have given the updated helpful answer / content for your query in an easily accessible format to help you in preparing adequately. We do offer free support materials, 10th maths guide, 10th science guide, 10th tamil guide, 10th social guide, 10th english guide, science 10th guide and also for all the classes books and guide to all the students who sign up for SaraNextGen. Apart from traditional textbook queries, we've got conjointly provided further high order level thinking issues, that are seemingly to be expected in boards and competitive exams. It includes conceptual queries, MCQs, Long and short answer type queries, etc. These Questions are designed to learn each student and academics by providing chapter-wise further issues focusing totally on testing conceptual information with applications. Here, we've got provided a number of the necessary ways in which within which the solutions of all the Questions will profit students of class 1 to 12. If you have any queries, drop a message to us and we will get back to you at the earliest.


SaraNextGen