Question

Two identical blocks a and b are connected by a lightweight rope. block a is pulled to the right by a constant force f0. the blocks are moving to the right across a rough surface and approach point p, where the rough surface transitions to a surface with negligible friction. how does the tension, t, in the rope connecting the blocks change, if at all, as block a passes point p?

Answer 1

When block A passes point P, the negligible friction will lead to the tension, T, between the two blooks A and B increasing.

What happens to the tension after point P?

The tension in the rope can be found by the formula:

= Coefficient of friction x Mass x Acceleration

Thanks to the transition to the surface after point P, the friction is now negligible which means that there will be an increase in acceleration.

This will increase the tension as shown by the formula for tension.

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