Question

a bobbin with thread around it lies on a horizontal floor and can roll along it without slipping. both pulleys P1 and P2 are light and frictionless. the pulley p1 moved downward with constant velocity V0. the velocity of centre of mass of bobbin is

Answer 1

Answer:

On a horizontal floor, a bobbin with thread around it can roll along without slipping.

Explanation:

• The forces of attraction, known as adhesion, between the contact zones of the surfaces, which are always microscopically uneven, appear to be the primary cause of friction between metals.
• Shearing these "welded" joints causes friction, as do the irregularities of the harder surface ploughing across the softer surface.
•  P1 and P2 are both light and frictionless pulleys. With constant velocity V0, the pulley p1 moved downward.
• The bobbin's centre of mass velocity is an object's position with regard to a frame of reference is its velocity, which is a function of time. A statement of an object's speed and direction of motion is referred to as velocity.