Saved Bookmarks
| 1. |
If the length of the simple pendulum is increased by 69 %, then the %increase in its time is? |
|
Answer» T = 2π √l/g 69% increases means L= 169 ,if initial L is 100 So, T = 2π √100/g T' = 2π √169 /g T/T' = 2π √100/g / 2π √169 /g T/T' = 10/13 Change in time period = T' - T÷ T x 100 = 13 -10 ÷ 10 x 100 = 30% |
|