Saved Bookmarks
| 1. |
If two springs S, and S, of force constants k, and ky, respectively, are stretched by the same force, it is found that more work is done on spring S, than on spring S.Statement 1: If stretched by the same amount, work done on S, will be more than that on S. Statement 2: k_1 ltk_2 |
|
Answer» Statement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of Statement 1. `w_1=1/2k_1x_1^2=((k_1x_1)^2)/(2k_1)=(F^2)/(2k_1)` SIMILARLY, `w_2=(F^2)/(2k_2)` `IMPLIES W prop 1/k` `k_1ltk_2 :. W_1gtw_2` Statement 2 is true. Statement `1:w_1=1/2k_1x^2` `w_2=1/2k_2x^2` `implies w prop k` `because k_2gtk_1` `:.w_2gtw_1` `:.` Statement 1 is false. |
|