The angular speed of seconds needle in a mechanical watch is
The angular velocity of a particle rotating in a circular orbit 100 times per minute is
A body of mass 100 g is rotating in a circular path of radius r with constant velocity. The work done in one complete revolution is
A particle comes round a circle of radius 1 m once. The time taken by it is 10 sec. The average velocity of motion is
An unbanked curve has a radius of . The maximum speed at which a car can make a turn if the coefficient of static friction is 0.75, is
A wheel completes 2000 revolutions to cover the 9.5 km. distance. then the diameter of the wheel is
A cycle wheel of radius 0.4 m completes one revolution in one second then the acceleration of a point on the cycle wheel will be
The centripetal acceleration is given by
A cylindrical vessel partially filled with water is rotated about its vertical central axis. It’s surface will
If a particle covers half the circle of radius R with constant speed then
An aeroplane is flying with a uniform speed of 100 m/s along a circular path of radius 100 m. the angular speed of the aeroplane will be
A body moves with constant angular velocity on a circle. Magnitude of angular acceleration
A stone is tied to one end of a string 50 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 10 revolutions in 20 s, what is the magnitude of acceleration of the stone
A 100 kg car is moving with a maximum velocity of 9 m/s across a circular track of radius 30 m. The maximum force of friction between the road and the car is
The maximum speed of a car on a road–turn of radius 30 m, if the coefficient of friction between the tyres and the road is 0.4, will be
The angular velocity of a wheel is 70 rad/sec. If the radius of the wheel is 0.5 m, then linear velocity of the wheel is
A cyclist goes round a circular path of circumference 34.3 m in √22 sec. the angle made by him, with the vertical, will be
A particle of mass M is moving in a horizontal circle of radius R with uniform speed V. When it moves from one point to a diametrically opposite point, its
A ball of mass 0.1 Kg. is whirled in a horizontal circle of radius 1 m. by means of a string at an initial speed of 10 R.P.M. Keeping the radius constant, the tension in the string is reduced to one quarter of its initial value. The new speed is
A cyclist riding the bicycle at a speed of 14√3 ms–1 takes a turn around a circular road of radius 20√3 m without skidding. Given g = 9.8 ms–2, what is his inclination to the vertical
If a cycle wheel of radius 4 m completes one revolution in two seconds. Then acceleration of a point on the cycle wheel will be
A bob of mass 10 kg is attached to wire 0.3 m long. Its breaking stress is 4.8 × 107 N/m2. The area of cross section of the wire is 10–6 m2. The maximum angular velocity with which it can be rotated in a horizontal circle
In uniform circular motion, the velocity vector and acceleration vector are
If a cyclist moving with a speed of 4.9 m/s on a level road can take a sharp circular turn of radius 4 m, then coefficient of friction between the cycle tyres and road is
A car moves on a circular road. It describes equal angles about the centre in equal intervals of time. Which of the following statement about the velocity of the car is true
