He should move on to the next point and not harp one string only.

A body at the end of a string moves in a vertical circle. The string always pulls the body towards the centre of the circle. Find the tension in the string when the body is at the highest point and at the lowest point.

A, B, C are 3 towns forming a triangle. A man has to walk from one town to the next town, then ride in the next, and then again drive towards his starting point. He can walk, ride and drive a km in a, b, c minutes respectively. If he starts from B, he takes a+c-b hours, if he starts from C, he takes b+a-c hours, and if he starts from A, he takes c+b-a hours. The length of the triangle is (Assume the motion to be anticlockwise).

A, B, C are three towns forming a triangle. A man has to walk from one town to the next town, then ride to the next, and then again drive towards his starting point. He can walk, ride, and drive a km in a, b, c minutes respectively. If he starts from B, he takes a + c - b hours, if he starts from C, he takes b + a - c hours, and if he starts from A, he takes c + b - a hours. The length of the triangle is :

A number of saplings are lying at a place by the side of a straight road. These are to be planted in a straight line at a distance interval of 10 meters between two consecutive saplings. Mithilesh, the country's greatest forester, can carry only one sapling at a time and has to more back to the original point to get the next sapling. In this manner he covers a total distance of 1.32 kms. How many saplings does he plant in the process if he ends at the starting point?

A wave is travelling along a string. At an instant shape of the string is as shown in the enclosed figure. At this instant, point A is moving upwards. Which of the following statements are correct?

A wave is travelling along a string. At an instant shape of the string is as shown in the enclosed figure. At this instant, point A is moving upwards. Which of the following statements are correct?

With what velocity a person should move so that he hears an octave of the note produced by a source at rest?