A one kg stone attached to the end of a 60 cm chain is revolving at the rate of 3 revolutions/second. It is found that after 30 second, it makes only one revolution per second. What is the mean torque ?

A bob of mass 200 gm is attached to a string of length 100 cm and is revolved at the rate of 2 revolutions per second. What is its angular momentum ? If after 10 s it makes only on revolutions per second calculate the mean torque.

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 revolutions in 25 seconds, what is the magnitude and direction of acceleration of the stone?

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 revolutions in 25 seconds, what is the magnitude and direction of acceleration of the stone ?

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

A stone tied to end of a string 80 cm long is whirled in a horizontal plane with a constant speed. If the stone makes 14 revolutions in 25 seconds, what is the magnitude and direction of acceleration of the stone ?

The wheel of a carriage is 91 cm in diameter and makes 5 revolutions per second. How fast is the carriage running ?

A 100 g weight is tied at the end of a string and whirled around in horizontal circle of radius 15 cm at the rate of 3 revolutions per second. What is the tension in the string?

What its the number of revolution per second of revolving electron in first Bohr orbit?