Question

Take a wooden tray/block. Place it near the one edge of a table top. Keep a cylindrical
pencil/rod on the opposite edge of the table top (using drawing pins). Make sure the
pencil/rod is free to rotate about its axis (between the drawing pins) as shown in the
figure. (You can also use a pulley for this purpose).
Next take the plastic lid of a jar. Make three symmetric holes in it. Put three pieces of
string through the holes and tie them together. Next tie them to a longer string from
which we can suspend the plastic lid freely. Tie the other end of the longer string to
the wooden tray/block such that it passes
over the pencil.
Take some marbles (marble chips/very
small marbles). Add these marbles in the
plastic lid one by one until the wooden
tray/block starts just sliding. Note down
the number of marbles required. The
number of marbles, put in the plastic lid,
is an indicator of the magnitude of the
limiting force of (static) friction.
Once the wooden tray/block begins to slide, (gently) take out a small marble from
the plastic lid. What do we observe? Pick up another such small marble. Does the​

Answer 1

Answer:

please complete it and ask it again