Does a man jumping off a rolling cylinder affect its velocity?

[Brilli]

Homework Statement

Given a cylinder is rolling purely and a man with mass m is attatched to a point in the circumference of the cylinder. As the man approaches the lowest point he jumps vertically up. Will the velocity of the cylinder increase, decrease or remain same after the man is detached and is in motion as stated above?

Homework Equations

The Attempt at a Solution

As the moment of inertia decreases over time wrt centre of mass of cylinder until man reaches highest position the cylinders velocity changes to conserve energy.

My problem is to explain it in normal terms and not any conservation of anything point of view. Also i am ot sure if my explanation is correct.

 

[haruspex]

As the moment of inertia decreases over time wrt centre of mass of cylinder until man reaches highest position the cylinders velocity changes to conserve energy.

I don't understand how this relates to the question. Are you referring to the man's rising to highest position while still attached to the cylinder or after jumping up? Either way, it does not seem relevant. The question is only concerned with a brief period around the detachment (jumping up).

 

[PeroK]

Homework Statement

Given a cylinder is rolling purely and a man with mass m is attatched to a point in the circumference of the cylinder. As the man approaches the lowest point he jumps vertically up. Will the velocity of the cylinder increase, decrease or remain same after the man is detached and is in motion as stated above?

I can't visualise this at all. How do you jump upwards from the bottom of a cylinder? The cylinder is in the way, surely?

 

[TSny]

I can't visualise this at all. How do you jump upwards from the bottom of a cylinder? The cylinder is in the way, surely?

I guess it's a hollow cylinder with the man on the inside surface.

 

[TSny]

My problem is to explain it in normal terms and not any conservation of anything point of view.

Consider all the forces acting on the cylinder during the jump. Draw a free body diagram of the cylinder at this time.

Also i am ot sure if my explanation is correct.

I don't believe it's correct.

 

[Brilli]

I guess it's a hollow cylinder with the man on the inside surface.
View attachment 222687

Thank you for your reply. Yes this is the exact figure of the process