A gramophone record is revolving with an angu | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) For the coin to revolve with the record without slipping,the required centripetal force must be provided by the static frictional force.The centri

Vedclass · Accepted Answer

$R \leq \frac{\mu g}{\omega^2}$

Vedclass · Answer

(D) For the coin to revolve with the record without slipping,the required centripetal force must be provided by the static frictional force.The centripetal force required is $F_c = mR\omega^2$.The maximum static frictional force available is $f_{s,max} = \mu N = \mu mg$.For the coin to remain stationary relative to the record,the centripetal force must be less than or equal to the maximum static friction:$mR\omega^2 \leq \mu mg$Dividing both sides by $m\omega^2$,we get:$R \leq \frac{\mu g}{\omega^2}$

$A$ gramophone 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

Similar Questions

The angle between the lines whose direction cosines satisfy the equations $l+m+n=0$ and $l^2+m^2-n^2=0$ is

The protective coat of structural protein in viruses is made up of units called:

Which of the following metals is the most reactive?

$A$ bulb of $100 \ W$ rating is connected with $220 \ V$ supply. The resistance of the bulb is . . . . . . .

Vedclass Test Series

Exam Paper Generator

Online Exam Module