Answer :

Since the particle is just able to complete the circle, at the highest point only its weight keeps it in circular path and tension in the string will be zero, hence option A is right. In case of option B, the particle completes a full circle. Therefore, at the highest point, it must have horizontal velocity equal to .


Option C is also not true because initial kinetic energy should be .


Since no further work is done on the particle by an external force, the total mechanical energy of the systems remains constant and the particle passes the initial position with the same initial velocity. Hence option D is correct.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

A balloon filled Physics - Exemplar

A rocket acceleraPhysics - Exemplar

A curved surface Physics - Exemplar

A block of mass 1Physics - Exemplar

Which of the diagPhysics - Exemplar

The kinetic energHC Verma - Concepts of Physics Part 1

Which of the diagPhysics - Exemplar

<span lang="EN-USHC Verma - Concepts of Physics Part 1

The magnetic forcHC Verma - Concepts of Physics Part 1

A particle slidesHC Verma - Concepts of Physics Part 1