Question Answers
Sahay Sir > Question Answers
A small block of mass 4 kg is attached to a cord passing through in a horizontal frictionless surface. The block is originally revolving in a circle of radius 0.5 m about the hole with a tangential velocity of 4 m/s. The cord is then pulled slowely from below shortening the radius of the circle in which the block revolves. The breaking strength of the cord is 600 N. What will be the radius of the circle when the cord breaks?
28
Sep
A small block of mass 4 kg is attached to a cord passing through in a horizontal frictionless surface. The block is originally revolving in a circle of radius 0.5 m about the hole with a tangential velocity of 4 m/s. The cord is then pulled slowely from below shortening the radius of the circle [...]
Tags:
A disk with moment of inertia I1 rotates about a frictionless ,
drops onto the first disk. Because of friction between the surfaces ,
the two eventually reach the same angular speed ω f. Calculate ω f. ,
this one having moment of inertia I2 and initially not rotating ,
vertical axle with angular speed ω i. A second disk ,
A disk with moment of inertia I1 rotates about a frictionless, vertical axle with angular speed ω i. A second disk, this one having moment of inertia I2 and initially not rotating, drops onto the first disk. Because of friction between the surfaces, the two eventually reach the same angular speed ω f. Calculate ω f.
28
Sep
A disk with moment of inertia I1 rotates about a frictionless, vertical axle with angular speed ω i. A second disk, this one having moment of inertia I2 and initially not rotating, drops onto the first disk. Because of friction between the surfaces, the two eventually reach the same angular speed ω f. Calculate ω [...]
Tags:
A disk with moment of inertia I1 rotates about a frictionless ,
drops onto the first disk. Because of friction between the surfaces ,
the two eventually reach the same angular speed ω f. Calculate ω f. ,
this one having moment of inertia I2 and initially not rotating ,
vertical axle with angular speed ω i. A second disk ,
A sphere rolls without slipping on a rough surface with centre of mass has constant speed v0. If mass of the sphere is M and its radius be R, then the angular momentum of the sphere about the point of contact.
28
Sep
A sphere rolls without slipping on a rough surface with centre of mass has constant speed v0. If mass of the sphere is M and its radius be R, then the angular momentum of the sphere about the point of contact. A sphere rolls without slipping on a rough surface with centre of mass has [...]
Calculate the angular momentum in following situation. A disc is connected with a rod of mass m and length l. THe disc is free to rotate about its own axis. If whole system is rotating with omega1 j and disc also rotate about its own axis with omega 2 i then calculate L about origin.
28
Sep
Calculate the angular momentum in following situation. A disc is connected with a rod of mass m and length l. THe disc is free to rotate about its own axis. If whole system is rotating with omega1 j and disc also rotate about its own axis with omega 2 i then calculate L about origin. [...]
A circular disc of mass m and radius R is set into motion on a horizontal floor with a linear speed v in the forward direction and an angular speed ω= R v in the clockwise direction as shown in Figure. Find the magnitude of the total angular momentum of the disc about the bottom most point O of the disc.
28
Sep
A circular disc of mass m and radius R is set into motion on a horizontal floor with a linear speed v in the forward direction and an angular speed ω= R v in the clockwise direction as shown in Figure. Find the magnitude of the total angular momentum of the disc about the [...]
Calculate the angular momentum about point “O” on the axis of rotation in following cases.
28
Sep
Calculate the angular momentum about point “O” on the axis of rotation in following cases. Calculate the angular momentum about point "O" on the axis of rotation in following cases. September 28, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A particle of mass `m` is projected with a speed `u` at an angle `theta` to the horizontal at time `t = 0`. Find its angular momentum about the point of projection `O` at time `t`, vectorially. Assume the horizontal and vertical lines through `O` as `X` and `Y` axes, respectively.
28
Sep
A particle of mass `m` is projected with a speed `u` at an angle `theta` to the horizontal at time `t = 0`. Find its angular momentum about the point of projection `O` at time `t`, vectorially. Assume the horizontal and vertical lines through `O` as `X` and `Y` axes, respectively. A particle of mass [...]
A particle of mass m is released from rest at point A in Figure, falling parallel to the (vertical) y-axis. Find the angular momentum of the particle at any time t with respect to the same origin O.
28
Sep
A particle of mass m is released from rest at point A in Figure, falling parallel to the (vertical) y-axis. Find the angular momentum of the particle at any time t with respect to the same origin O. A particle of mass m is released from rest at point A in Figure falling parallel to [...]
A boy is pushing a ring of mass 2 kg and radius 0.5 m with a stick as shown in the figure. The stick applies a force of 2 N on the ring and rolls it without slipping with an acceleration of 0.3 m/s 2 .The coefficient of friction between the ground and the ring is large enough that rolling always occurs and the coefficient of friction between the stick and the ring is 10 P. The value of P is :
28
Sep
A boy is pushing a ring of mass 2 kg and radius 0.5 m with a stick as shown in the figure. The stick applies a force of 2 N on the ring and rolls it without slipping with an acceleration of 0.3 m/s 2 .The coefficient of friction between the ground and the ring [...]
A uniform circular disc of mass 1.5 kg and raius 0.5 m is initially ar rest on a horiozntal frictonless surface. Three forces of equal matgnitude F = 0.5 N are applied simultaneously along the three sides of an equilateral triangle XYZ with its vertices on the perimeter of the disc (see figure). One second after applying the forces the angular speed of the disc in rads−1 is
28
Sep
A uniform circular disc of mass 1.5 kg and raius 0.5 m is initially ar rest on a horiozntal frictonless surface. Three forces of equal matgnitude F = 0.5 N are applied simultaneously along the three sides of an equilateral triangle XYZ with its vertices on the perimeter of the disc (see figure). One second [...]