Numerical Problems Based on Class 11 Physics Centripetal Force with Answers
Here we are providing numerical problems based on class 11 physics. In this article, you will find numerical problems based on class 11 physics centripetal force with answers.
Table of Contents
Q.1. A 100 g weight is tied at the end of a string and whirled around in a horizontal, circle of radius 15 cm at the rate of 3 revolutions per second. What is the tension in the string?
(Ans. 5.334 N)
Q.2. A particle of mass 21 g attached to a string of 70 cm length is whirled round in a horizontal circle. If the period of revolution is 2 s, find the tension in the string.
(Ans. 14520 dyne)
Q.3. A ball of mass 100 g is suspended by a string 40 cm long. Keeping the string taut, the ball describes a horizontal circle of radius 10 cm. Find the angular speed.
(Ans. 1.59 rad s-1)
Q.4. A stone of mass 4 kg is attached to a string of 10 m length and is whirled in a horizontal circle. The string can withstand a maximum tension of 160 N. Calculate the maximum velocity of revolution that can be given to the stone without breaking the string.
(Ans. 20 ms-1)
Q.5. A gramophone disc rotates at 60 rpm. A coin of mass 18 g is placed at a distance of 8 cm from the centre. Calculate the centrifugal force on the coin. Take π2 – 9.87.
(Ans. 4105.92 dyne)
