Chapter 9 – Circular Motion
A car moves along an uneven horizontal surface with a constant speed at all points. The normal reaction of the road on the car is 1. NA=NB=Nc=N(d) 2. Nc>ND>NA>NB 3. NB>NC>NANB 4. Nc>ND>NB>NA
22
Oct
A car moves along an uneven horizontal surface with a constant speed at all points. The normal reaction of the road on the car is 1. NA=NB=Nc=N(d) 2. Nc>ND>NA>NB 3. NB>NC>NANB 4. Nc>ND>NB>NA if w= i - j + k and r = i - 2j + 3k? What is the value of linear velocity [...]
Figure shows a light rod of length l rigidly attached to a small heavy block at one end and a hook at the other end. The system is released from rest with the rod in a horizontal position. There is a fixed smooth ring at a depth h below the initial position of the hook and the hook gets into the ring as it reaches there. What should be the minimum value of h so that the block moves in a complete circle about the ring?
22
Oct
Figure shows a light rod of length l rigidly attached to a small heavy block at one end and a hook at the other end. The system is released from rest with the rod in a horizontal position. There is a fixed smooth ring at a depth h below the initial position of the hook [...]
A simple pendulum having a bob of mass, m, is suspended from the ceiling of a car used in a stunt film shooting. The car moves up along an inclined cliff at a speed v and makes a jump to leave the cliff and lands at some distance. Let R be the maximum height of the car from the top of the cliff. The tension in the string when the car is in air is:
22
Oct
A simple pendulum having a bob of mass, m, is suspended from the ceiling of a car used in a stunt film shooting. The car moves up along an inclined cliff at a speed v and makes a jump to leave the cliff and lands at some distance. Let R be the maximum height of [...]
A simple pendulum is oscillating with an angular amplitude of 90^∘ as shown in the figure. The value of θ for which the resulting acceleration of the bob is directed (i) vertically downward, (ii) vertically upward and (iii) horizontally is`
22
Oct
A simple pendulum is oscillating with an angular amplitude of 90^∘ as shown in the figure. The value of θ for which the resulting acceleration of the bob is directed (i) vertically downward, (ii) vertically upward and (iii) horizontally is` (ii) vertically upward and (iii) horizontally is` A simple pendulum is oscillating with an angular [...]
A nail is located at a certain distance vertically below the point of suspension of a simple pendulum of length 1 m. The pendulum bob is released from a position where the string makes an angle of 60^∘ with the vertical. Calculate the distance of nail from the point of suspension such that the bob will just perform revolutions with the nail as the centre.
22
Oct
A nail is located at a certain distance vertically below the point of suspension of a simple pendulum of length 1 m. The pendulum bob is released from a position where the string makes an angle of 60^∘ with the vertical. Calculate the distance of nail from the point of suspension such that the bob [...]
A stone of mass 1 kg tied to a light inextensible string of length L=10/3 m is whirling in a circular path of radius L is a vertical plane . If the ratio in the string is 4 and if is taken to be 10 m/sec^2, the speed of the stone at the highest point of the circle is
21
Oct
A stone of mass 1 kg tied to a light inextensible string of length L=10/3 m is whirling in a circular path of radius L is a vertical plane . If the ratio in the string is 4 and if is taken to be 10 m/sec^2, the speed of the stone at the highest point [...]
A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time the stone is at lowest position and has a speed u . Find the magnitude of the change in its velocity as it reaches a position, where the string is horizontal.
21
Oct
A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time the stone is at lowest position and has a speed u . Find the magnitude of the change in its velocity as it reaches [...]
A particle of mass m is attached to a light string of length l, the other end of which is fixed. Initially the string is kept horizontal and the particle is given an upward velocity v. The particle is just able to complete a circle. 1. The string becomes slack when the particle reaches its highest point 2. The velocity of the particle becomes zero at the highest point. 3. The kinetic energy of the ball in initial position was 12mv^2=mg 4. The particle again passes through the initial position.
21
Oct
A particle of mass m is attached to a light string of length l, the other end of which is fixed. Initially the string is kept horizontal and the particle is given an upward velocity v. The particle is just able to complete a circle. 1. The string becomes slack when the particle reaches its [...]
In a simple pendulum, the breaking strength of the string is double the weight of the bob. The bob is released from rest when the string is horizontal. The string breaks when it makes an angle θ with the vertical.
21
Oct
In a simple pendulum, the breaking strength of the string is double the weight of the bob. The bob is released from rest when the string is horizontal. The string breaks when it makes an angle θ with the vertical. In a simple pendulum the breaking strength of the string is double the weight of [...]
A weightless thread can support tension up to 30N.A particle of mass 0.5kg is tied to it and is revolved in a circle of radius 2m in a vertical plane. If g=10m/s^2, then the maximum angular velocity of the stone will be
21
Oct
A weightless thread can support tension up to 30N.A particle of mass 0.5kg is tied to it and is revolved in a circle of radius 2m in a vertical plane. If g=10m/s^2, then the maximum angular velocity of the stone will be A weightless thread can support tension up to 30N.A particle of mass 0.5kg [...]