Physics-
General
Easy
Question
Periodic time of a satellite revolving above Earth’s surface at a height equal to R, radius of Earth, is [g is acceleration due to gravity at Earth’s surface]
The correct answer is:
Related Questions to study
physics-
A body of mass m rises to height h = R/5 from the earth’s surface, where R is earth’s radius. If g is acceleration due to gravity at earth’s surface, the increase in potential energy is-
A body of mass m rises to height h = R/5 from the earth’s surface, where R is earth’s radius. If g is acceleration due to gravity at earth’s surface, the increase in potential energy is-
physics-General
physics-
The value of ‘g’ at a particular point is 9.8 m/s2 Suppose K the earth suddenly shrinks uniformly to half its present size without losing any mass The value of ‘g’ at the same point from the centre of earth does not shrink) will now be :
The value of ‘g’ at a particular point is 9.8 m/s2 Suppose K the earth suddenly shrinks uniformly to half its present size without losing any mass The value of ‘g’ at the same point from the centre of earth does not shrink) will now be :
physics-General
physics-
Which of the following relation is wrong?
Which of the following relation is wrong?
physics-General
physics-
A 0.5kg ball is suspended to a string of length 1m and is rotated in a vertical plane by holding one end of the string. If it makes 30 rpm then the maximum tension in the string is .... 
A 0.5kg ball is suspended to a string of length 1m and is rotated in a vertical plane by holding one end of the string. If it makes 30 rpm then the maximum tension in the string is ....
physics-General
physics-
A stone tied to a string is swung in a vertical circle The physical quantity that remains constant is ....
A stone tied to a string is swung in a vertical circle The physical quantity that remains constant is ....
physics-General
physics-
The maximum velocity with which a vehicle can negotiate a turn of radius “r” safely, when the Coefficient of friction between the tyres and the road is m is ....
The maximum velocity with which a vehicle can negotiate a turn of radius “r” safely, when the Coefficient of friction between the tyres and the road is m is ....
physics-General
physics-
A particle moves along a circle of radius 
m with constant tangential acceleration. If the velocity of the particle is 80ms-1 at the end of second revolution after motion has begun, the tangential acceleration is....m/s2</su
A particle moves along a circle of radius m with constant tangential acceleration. If the velocity of the particle is 80ms-1 at the end of second revolution after motion has begun, the tangential acceleration is....m/s2</su
physics-General
physics-
The linear acceleration of a particle which completes a revolution in circle of radius 10cm with constant speed in 4 seconds is.....cm/s2</su
The linear acceleration of a particle which completes a revolution in circle of radius 10cm with constant speed in 4 seconds is.....cm/s2</su
physics-General
physics-
Angular acceleration, a is zero in case of ........
Angular acceleration, a is zero in case of ........
physics-General
physics-
Translatory motion can be analysed by......
Translatory motion can be analysed by......
physics-General
physics-
A boat which has speed of 13 kmph in still water crosses a river of width 1 km along the shortest possible path in 12 minutes The velocity of the river water in kmph is..
A boat which has speed of 13 kmph in still water crosses a river of width 1 km along the shortest possible path in 12 minutes The velocity of the river water in kmph is..
physics-General
physics-
A stone projected with a velocity U at an angle 
with the horizontal reaches maximum height H1, when it is projected with velocity U at an angle 
with the horizontal reaches maximum height H2 The relation between horizontal range R of the projectile, H1 and H2 is...
A stone projected with a velocity U at an angle with the horizontal reaches maximum height H1, when it is projected with velocity U at an angle with the horizontal reaches maximum height H2 The relation between horizontal range R of the projectile, H1 and H2 is...
physics-General
physics-
Two particles A and B are projected simultaneously in the directions shown in figure with velocities 
and 
respectively They collide in air after 0.5s. Find the angle at ‘A’ with horizontal.
Find the angle at ‘A’ with horizontal.
Two particles A and B are projected simultaneously in the directions shown in figure with velocities and respectively They collide in air after 0.5s. Find the angle at ‘A’ with horizontal.
Find the angle at ‘A’ with horizontal.
physics-General
physics-
If the particles collide in air, then find the angle of projection ‘a ’ of particle ‘B’.
If the particles collide in air, then find the angle of projection ‘a ’ of particle ‘B’.
physics-General
physics-
Rain is falling with a velocity of 25m/s. A woman rides a bicycle with a speed of 10m/s in the north to south direction. What is the direction in which she should hold her umbrella to save herself from rain.
Rain is falling with a velocity of 25m/s. A woman rides a bicycle with a speed of 10m/s in the north to south direction. What is the direction in which she should hold her umbrella to save herself from rain.
physics-General
