1 Crore+ students have signed up on EduRev. Have you? Download the App 
A motor cyclist rides around the well with a round vertical wall and does not fall down while riding because
One end of a string of length I is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v, the net force on the particle directed towards the centre is (where T is the tension in the string)
The mass of a bicycle rider along with the bicycle is 100 kg. He wants to cross over a circular turn of radius 100 m with a speed o f 10 m s^{1}. If the coefficient of friction between the tyres and the road is 0.6, the frictional force required by the rider to cross the turn, is
A stone of mass m tied to the end of a string revolves in a vertical circle of radius R. The net forces at the lowest and highest points of the circle directed vertically downwards are
T_{1} and v_{1} denotes the tension and speed at the lowest point. T_{2} and v_{2} denotes corresponding values at the highest point.
A small object placed on a rotating horizontal turn table just slips when it is placed at a distance 4 cm from the axis of rotation. If the angular velocity of the turntable is doubled, the object slips when its distance from the axis of rotation is
A particle is moving on a circular path of 10 m radius. At any instant of time, its speed is 5 m s^{1} and the speed is increasing at a rate of 2 m s^{1}. The magnitude of net acceleration at this instant is
The coefficient of frictionbetween the tyres and the road is 0.1. The maximum speed with which a cyclist can take a circular turn of radius 3m without skidding it.(Take g = m s^{2})
A stone of mass 5 kg is tied to a string of length 10 m is whirled round in a horizontal circle. Wha is the maximum speed with which the stone can be whirled around if the string can witbstand a maximum tension of 200 N.
In the question number 8, the maximum permissible speed to avoid slipping is
118 videos470 docs189 tests

118 videos470 docs189 tests
