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For the fig as shown:
The correct answer is:
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Forces 3N, 4N and 12N act at a point along x, y and z axis respectively The magnitude of the i resultant force is :
Forces 3N, 4N and 12N act at a point along x, y and z axis respectively The magnitude of the i resultant force is :
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If the density of a small planet is the same as that of earth, while the radius of the planet is 0.2times that of the earth, the gravitational acceleration on the surface of that planet is
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Let g be the acceleration due to gravity at earth’s surface and K be the rotational kinetic energy of the earth. Suppose the earth’s radius decreases by 2% keeping all other quantities same, then-
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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]
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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-
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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 :
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Which of the following relation is wrong?
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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 ....
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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 ....
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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
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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
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Angular acceleration, a is zero in case of ........
Angular acceleration, a is zero in case of ........
physics-General
