Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outermost particle is $v_0$, then the ratio of tensions in the three sections of the string is
$3:5:7$
$3:4:5$
$7:11:6$
$3:5:6$
An aircraft executes a horizontal loop at a speed of $720\; km/h$ with its wings banked at $15^o$. What is the radius of the loop in $km$?
A car has to move on a level turn of radius $450\,m.$ If the coefficient of static friction between tyre and the road is $\mu = 0.2.$ Find the maximum speed the car can take without skidding is given by ........ $m/s$
A car of mass $m$ is moving on a level circular track of radius $R.$ If $\mu_s $ represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by
The coefficient of friction between the tyres and the road is $0.25$. The maximum speed with which a car can be driven round a curve of radius $40 \,m$ without skidding is ........ $ms^{-1}$ (assume $g = 10 \,ms^{-2}$)
A disc revolves with a speed of $33 \frac{1}{3}\; rev/min$, 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 co-efficient of friction between the coins and the record is $0.15,$ which of the coins will revolve with the record?