Advertisements
Advertisements
प्रश्न
Write the formula to calculate the speed of a body moving along a circular path. Give the meaning of each symbol which occurs in it.
Advertisements
उत्तर
The speed of a body moving along a circular path is given by the formula :
`v = "2πr"/T`
Where,
(v) - Speed of the object in circular path.
(π) - It is a constant having value close to 3.14
(r) - Radius of circular path
(T) - Time taken for one round of circular path.
APPEARS IN
संबंधित प्रश्न
What does the odometer of an automobile measure?
Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Which
bus travels faster ?
If a sprinter runs a distance of 100 metres in 9.83 seconds, calculate his average speed in km/h.
Give one example of following motion :
Uniform velocity
The diagram below shows the pattern of the oil on the road at a constant rate from a moving car. What information do you get from it about the motion of the car.
Figure shows the displacement of a body at different times .
Calculate the average velocity during the time interval 5 s to 9 s ,
[Hint : From 5 s to 9 s , displacement = 7 m - 3m = 4m]
A train is moving with a velocity of 90 km h-1 . It is brought to stop by applying the brakes which produce a retardation of 0.5 ms-2 Find :
(i) The velocity after 10 s , and
(ii) the time taken by the train to come to rest .
What is the relation between distance and time when the body is moving with variable velocity?
Derive th e equation of motion.
S = ut+ `1/2` at2,
Where the symbols have their usual meanings
A motorcyclist drives from A to B with a uniform speed of 30 km h–1 and returns back with a speed of 20 km h–1. Find its average speed.
