Read the following and answer the questions from [21] to [25]. |
If an object moves in a circular path with uniform speed, then its motion is called uniform circular motion. |
When an object moves along a circular path, its direction of motion keeps changing continuously. The velocity changes due to continuous change in direction and thus motion along a circular path is said to be accelerated. |
When a body takes one round of a circular path, then it travels a distance equal to its circumference which is 271 r, where r is the radius of the circular path. |
Then, speed of the body moving in a circular path, \[v=2\pi r/t\], where t is the time taken for one round of circular path and n is constant having value 22/7. |
An insect moves along a circular path of radius 10 cm with a constant speed. It takes 1 min to move from a point on the path to the diametrically opposite point. |
A) 3.14 cm
B) 31.4 cm
C) 314 cm
D) 0.314 cm
Correct Answer: B
Solution :
[b] The distance moved in 1 min \[=\pi r=3.14\times 10=31.4\operatorname{cm}\]You need to login to perform this action.
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