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A pair of stars rotates about a common centre of mass. One of the stars has a mass M and the other m. Their centres are a distance d apart, d being large compared to the size of either star. Derive an expression for the period of revolution of the stars about their common centre of mass. Compare their angular momenta and kinetic energies.
27
Aug
A pair of stars rotates about a common centre of mass. One of the stars has a mass M and the other m. Their centres are a distance d apart, d being large compared to the size of either star. Derive an expression for the period of revolution of the stars about their common centre [...]
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A pair of stars rotates about a common centre of mass. One of the stars has a mass M and the other m. Their centres are a distance d apart ,
d being large compared to the size of either star. Derive an expression for the period of revolution of the stars about their common centre of mass. Compare their angular momenta and kinetic energies. ,
On a two lane road, car A is travelling with a speed of 36 km h^(-1), Two cars B and C approach car A in opposite directions with a speed of 54 km h^(-1). At a certain instant, when the distance AB is equal to AC, both 1 km B decided to overtake A before Cdoes. What minimum acceleration of car B is required to avoid and accident?
27
Aug
On a two lane road, car A is travelling with a speed of 36 km h^(-1), Two cars B and C approach car A in opposite directions with a speed of 54 km h^(-1). At a certain instant, when the distance AB is equal to AC, both 1 km B decided to overtake A before [...]
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both 1 km B decided to overtake A before Cdoes. What minimum acceleration of car B is required to avoid and accident? ,
car A is travelling with a speed of 36 km h^(-1) ,
On a two lane road ,
Two cars B and C approach car A in opposite directions with a speed of 54 km h^(-1). At a certain instant ,
when the distance AB is equal to AC ,
A car moves from X to Y with a uniform speed vu and returns to Y with a uniform speed vd. The average speed for this round trip is
27
Aug
A car moves from X to Y with a uniform speed vu and returns to Y with a uniform speed vd. The average speed for this round trip is A car moves from X to Y with a uniform speed vu and returns to Y with a uniform speed vd. The average speed for this [...]
A particle is moving along x-axis has acceleration f at time t, given by f = f0 (1 − t/T), where f0 and T are constants. The particle at t=0 has zero velocity. In the time interval between t = 0 and the instant when f = 0, the particle’s velocity (vx) is
27
Aug
A particle is moving along x-axis has acceleration f at time t, given by f = f0 (1 − t/T), where f0 and T are constants. The particle at t=0 has zero velocity. In the time interval between t = 0 and the instant when f = 0, the particle’s velocity (vx) is A particle [...]
The distance traveled by a particle starting from rest and moving with an acceleration 4/3ms^−2 in the third second is –
27
Aug
The distance traveled by a particle starting from rest and moving with an acceleration 4/3ms^−2 in the third second is – The distance traveled by a particle starting from rest and moving with an acceleration 4/3ms^−2 in the third second is - August 27, 2020 Category: Chapter 3 - Motion in a Straight Line , [...]
A particle shows distance − time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point.
27
Aug
A particle shows distance − time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point. A particle shows distance − time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point. August 27, 2020 Category: Chapter 3 - Motion in [...]
A particle moves in a straight line with a constant acceleration. It changes its velocity from 10ms^−1 to 20ms^−1 while passing through a distance 135 min t second. The value of t is
27
Aug
A particle moves in a straight line with a constant acceleration. It changes its velocity from 10ms^−1 to 20ms^−1 while passing through a distance 135 min t second. The value of t is A particle moves in a straight line with a constant acceleration. It changes its velocity from 10ms^−1 to 20ms^−1 while passing through [...]
A particle is projected from point A that is at a distance 4R from the centre of the Earth will speed v 1 in a direction making joining the centre of the Earth and point A as shown.find the speed v 2 if particle passes grazing the surface of the earth Constant interaction only between these two Express you answer in the form (500× 2 X)m/s and write the value of X?
27
Aug
A particle is projected from point A that is at a distance 4R from the centre of the Earth will speed v 1 in a direction making joining the centre of the Earth and point A as shown.find the speed v 2 if particle passes grazing the surface of the earth Constant interaction [...]
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A spaceship is sent to investigate a planet of mass M and radius R. While hanging motionless in space at a distance 5R from the centre of the planet ,
the spaceship fires an instrument package of mass m ,
which is much smaller than the mass of the spaceship. The angle θ for which the package just grazes the surface of the planet is ,
A spaceship is sent to investigate a planet of mass M and radius R. While hanging motionless in space at a distance 5R from the centre of the planet, the spaceship fires an instrument package of mass m, which is much smaller than the mass of the spaceship. The angle θ for which the package just grazes the surface of the planet is
27
Aug
A spaceship is sent to investigate a planet of mass M and radius R. While hanging motionless in space at a distance 5R from the centre of the planet, the spaceship fires an instrument package of mass m, which is much smaller than the mass of the spaceship. The angle θ for which the package [...]
Tags:
A spaceship is sent to investigate a planet of mass M and radius R. While hanging motionless in space at a distance 5R from the centre of the planet ,
the spaceship fires an instrument package of mass m ,
which is much smaller than the mass of the spaceship. The angle θ for which the package just grazes the surface of the planet is ,
A police van moving on a highway with a speed of 30 km h^(-1) Fires a bullet at a thief’s car speeding away in a same direction with a speed of 192 km h^(-1). If the muzzle speed of the buller is 150 m s^(-1), with what speed does the bullet hit thief’s car? .
27
Aug
A police van moving on a highway with a speed of 30 km h^(-1) Fires a bullet at a thief’s car speeding away in a same direction with a speed of 192 km h^(-1). If the muzzle speed of the buller is 150 m s^(-1), with what speed does the bullet hit thief’s car? . [...]
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A person walks up a stationary escalation in t 1 second. If he remains stationary on the escalator ,
then a. Determine the speed of man with respect to the escalator. b. Determine the speed of the escalator. c. How much time would it take him to walk up the moving escalator? ,
then it can take him up in t 2 second. If the length of the escalator is L ,