A long plying record revolves with a speed of `33 (1)/(3) "rev min"^(-1)`, and has a radius of 15 cm. Two coins are placed at 4 cm and 14 cm away from the centre of the record. If the coefficient of friction between the coins and the record is 0.15, which of the two coins will revolve with the record ? Take `g = 9.8 ms^(-2)`.

A disc revovles with a speed of 33 (1)/(3) rev//min and has a radius of 15 cm Two coins are palaced at 4 cm and 14 cm away from the center of the record If the coefficient of friction between the coins and the record is 0.5 which of the coins will revolve with the road ?

A gramphone record is revolving with an angular velocity omega. A coin is placed at a distance r from the centre of the record. The static coefficient of friction is mu. The coin will revolve with the record if.

A gramphone record is revolving with an angular velocity omega . A coin is placed at a distance R from the centre of the record. The static coefficient of friction is mu . The coin will revolve with the record if

A coin of 4 g mass is placed at a distance of 2 cm from the axis of rotation a disc,. If the frequancy of disc is 180 rpm, then the coefficient of friction between the coin at rest and disc will be

Find the maximum speed at which a car can take turn round a curve of 30 cm radius on a level road if the coefficient of friction between the tyres and the road is 0.4. Take g = 10 ms^(-2) .

A particle of mass 0.1kg has an iniital speed of 4ms^(-1) at a point A on a roudh horizontal road. The coefficient of friction between the object and road is 0.15. The particle moves to a point B at a distance of 2m from A. What is the speed of particle at B ? Take g=10ms^(-2)

The coefficient of friction between the tyres and the road is 0.1. The maximum speed with which a cyclist can take a circular turn of radius 3 m without skidding is ("Take g"=10ms^(-2))

A small coin is placed at a distance r from the centre of a gramophone record.The rotational speed of the record is gradually increased. If the coefficient of friction between the coin and the record is mu, the minimum angular frequency of the record for which the coin will fly off is given by :

A disc rotates about its aixs of symmetry in a horizontal plane at a steady rate of 3.5 revolutions per second A coin placed at a distance fo 1.25 cm form the axis of ratation remains at rest on the disc The coefficient of friction between the coin and the disc is : (g=10//s^(2))

A gramophone disc is set revolving in a horizontal plane at the rate of 33(1)/(2) revolutions per minute. It is found that a small coin placed on the disc will remain there if its centre is not more than 5 cm from the axis of rotation. Calculate the coefficient of friction between the coin and the disc [Hint : Centripetal force = m omega^(2)r= Frictional force = mu N=mu mg ]