InterviewSolution
Saved Bookmarks
| 1. |
30.A car of mass 1000 kg moves on a circular pathwith constant speed of 16 m/s. It is turned by 90°after travelling 628 m on the road. The centripetalforce acting on the car is-(A) 160 N(C) 640 MN(B) 320 NN(D) 1280 N |
|
Answer» We know that, s=rθ Since it changes its direction after travelling 628m. Using the above formula, 628=r(π/2). Solving further we get, r=400 Now centripetal force= mv2/r Further substituting the value of r above we get1000*16*16/400=640N |
|