Question

1. A stone of mass 1 kg is tied to a rope 1 m long. It is rotated in a verticle circle at a particular point the speed of stone is 4 m/sec. The value of tension will be 6N. When the stone is at: (1) Top of the circle (2) The lowest point of the circle (3) Half way down (4) None of these


please explain the answer ​

Answer 1

Answer:

a) is the correct answer

so the net force is equal to centripetal force

there are two components of mg , mgcos and mg sin.

so, T- mgcos = mv^2/r

T-MV^2/R= MGCOS

SO PUTTING THE ABOVE VALUES ALONG WITH T=6N

6- 1×(4×4)/1 =10COSTHETHA

-10=10COS

COS=-1

THETHA=180

Explanation:

so as the thetha with mg is 180 that means the stone is at top