Question

Remove the refill from a ball point pen. pass an about 1 m long thin, strong cotton thread through the body of the pen. tie a heavy washer A at the lower end and a comparatively lighter washer B at the upper end as shown in fig. the masses of washers must be precisely measured with the help of a physical balance. mark a point on the tread at a distance of 20 cm below the lower edge of the body of the pen. hold thepen vertically in your right hand anf rotate the washer B till it moves on a circular path in horizontal plane with constant speed .you will find that the washer A moves up. increase the speed of rotation till the mark on thread rises to the lower edge of the body of the pen. calculate the speed with which washer B is moving on its circular path repeat the experiment for thread lengths 30 cm, 40 cm and 50 cm below the lower edge of the pipe. plot a gtaph between v2 and r taking v2 on y-axis and r on x-axis

Answer 1

Tie a heavy washer A at the lower end - 494… ... 1m long thin, strong cottonthread through the body of the pen. ... lighter washer B at the upper end as shown in fig.

Answer 2

Answer:where is the graph

Explanation: