An athlete completes one round of a circular track

Asked by admin @ 10/08/2021 in Physics viewed by 282 People

An athlete completes one round of a circular track of diameter 200m in 40s .what will be the distance covered and the displacement at the end 2 min 20s

Answered by admin @ 10/08/2021

Answer:

Explanation:

Given :-

Diameter of circular track = 200 m

Radius, r = 200/2 = 100 m

Time taken by athlete to complete one round = 40 seconds.

To Find :-

Distance covered = ??

Displacement = ??

Formula to be used :-

Speed = Distance/Time

Circumference of circle = 2πr

Solution :-

2 min 20 seconds = 140 seconds

Number of rounds = 140/40 = 3.5

⇒ Distance covered = 3.5 × circumference

⇒ Distance covered = 3.5 × 2 × 22/7 × 100

⇒ Distance covered = 5 × 2 × 22 × 100

⇒ Distance covered = 2200 m

Hence, the distance covered at the end of 2 min 20 seconds is 2200 m.

And displacement is 200 m as it return to initial position again.

An athlete complete one round of a circular track

Asked by admin @ 16/08/2021 in Physics viewed by 274 persons

An athlete completes one round of a circular track of diameter 200m in 40s .what will be the distance covered and the displacement at the end 2 min 20s

An athlete completes one round of a circular

Asked by admin @ 31/08/2021 in Physics viewed by 265 persons

An athlete completes one round of a circular track of diameter 200m in 40s .what will be the distance covered and the displacement at the end 2 min 20s

Time taken to complete one oscillation is called

Asked by admin @ 26/08/2021 in Physics viewed by 328 persons

What is an oscillation ? What is the time taken by an oscillating body to complete one oscillation called ?

A rotating table completes one rotation in 10 sec

Asked by admin @ 23/08/2021 in Physics viewed by 299 persons

A rotating table completes one rotation in 10sec. and it's moment of inertia is 100kg-m2. A person of mass 50kg stands at the centre of rotating table. If the person …

Time taken by a pendulum to complete one oscillation

Asked by admin @ 16/08/2021 in Physics viewed by 279 persons

Time taken by pendulum to complete one oscillation is called

One complete revolution of earth around the sun takes about

Asked by admin @ 27/11/2021 in Geography viewed by 368 persons

One complete revolution of Earth around the sun takes about a. One rotation. b. One season. c. One year. d. One eclipse

Time taken by the earth to complete one revolution

Asked by admin @ 20/08/2021 in Geography viewed by 382 persons

Exact time taken by earth to complete one revolution

A circular coil of one turn of radius 5cm

Asked by admin @ 17/08/2021 in Physics viewed by 305 persons

A circular coil of one turn of radius 5.0 cm is rotated about a diameter with a constant angular speed of 80 revolutions per minute. A uniform magnetic field B …

The earth completes one rotation on its axis in

Asked by admin @ 17/08/2021 in Geography viewed by 355 persons

The earth complete one rotation on its axis in

Time taken for an electron to complete one revolution

Asked by admin @ 13/08/2021 in Chemistry viewed by 302 persons

Time taken for an electron to complete one revolution in the bohr orbit of hydrogen atom is

The outer circumference of a circular track is 528m

Asked by admin @ 23/08/2021 in Math viewed by 269 persons

The outer circumference of a circular track is 528 m.The track is 14 m wide everywhere.calculate the cost of levelling the track at the rate of .50 per sq m

Two concentric circular coils one of small radius r1

Asked by admin @ 16/08/2021 in Physics viewed by 284 persons

Consider two concentric circular coils,one of radius r1 and the other of larger radiusr2(r1＜＜r2),placed coaxially with centres coinciding with each other.obtain the expression for the mutual inductance of the arrangement.

A car is moving in a circular horizontal track

Asked by admin @ 11/08/2021 in Physics viewed by 294 persons

a car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s A pendulum bob is suspended from the roof of the …

It takes the earth 365 days to make one complete

Asked by admin @ 05/11/2021 in Physics viewed by 292 persons

The rotation of earth takes approximately _______ to complete, and the revolution of earth takes approximately _______ to complete. A. 1 day, 30 days B. 12 hours, 24 hours C. …