If I have a stringh 41cm long I can make a rectangle using the string completely? Give reasons.

Can a simple pendulum be used in an artificial satelite? Give the reason

There is a string of length 44 cm. How many different rectangles with positive integers as length and breadth can be made with this string?

There is a string of length 44cm. How many different rectangles with positive integers as length and breath can be made with this string?

A mass of 0.1 kg is rotated in a vertical circle using a string of legth 20 cm. When the string makes an angle 30^(@) with the vertical, the speed of the mass is 1.5ms^(-1) . The tangential acceleration of the mass at that instant is

A stone tied to the end of a string 80 cm long is whirled in a horizontal circle with a constant speed . If the stone makes 14 revo-lutions is 25 s, what is the magnitude and direction of acceleration of the stone ?