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Easy
Question
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 correct answer 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
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
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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
physics-
A person swims in a river aiming to reach exactly on the opposite point on the bank of a river. His speed of swimming is 0.5m/s at an angle of 120° with the direction of flow of water. The speed of water is ..
A person swims in a river aiming to reach exactly on the opposite point on the bank of a river. His speed of swimming is 0.5m/s at an angle of 120° with the direction of flow of water. The speed of water is ..
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physics-
A man crosses a river from point ‘A’. If he swims perpendicular to the bank, he reaches point C 10minutes later. If he swims at angle a to ‘AB’ he reaches B in 12.5 minutes.
Find the direction of the boat with the vertical.
A man crosses a river from point ‘A’. If he swims perpendicular to the bank, he reaches point C 10minutes later. If he swims at angle a to ‘AB’ he reaches B in 12.5 minutes.
Find the direction of the boat with the vertical.
physics-General
physics-
A river is flowing from west to east at a speed of 5m/min. In what direction should a man on the south bank of the river capable of swimming at 10m/min, in still water should swim to cross the river in shortest time.
A river is flowing from west to east at a speed of 5m/min. In what direction should a man on the south bank of the river capable of swimming at 10m/min, in still water should swim to cross the river in shortest time.
physics-General
physics-
Two objects ‘A’ and ‘B’ are moving along the directions as shown in figure. Find the relative velocity of B with respect to A.
Two objects ‘A’ and ‘B’ are moving along the directions as shown in figure. Find the relative velocity of B with respect to A.
physics-General
physics-
A plank is moving on the ground with velocity ‘V1 ’ and a block is moving on the plank with velocity ‘V2 ’ relative to the plank. What will be the actual velocity of the block.
A plank is moving on the ground with velocity ‘V1 ’ and a block is moving on the plank with velocity ‘V2 ’ relative to the plank. What will be the actual velocity of the block.
physics-General
physics-
Two cars A and B are moving with a velocity of 50m/s in opposite directions along the same path. Find the relative velocity of ‘A’ with respect to ‘B’.
Two cars A and B are moving with a velocity of 50m/s in opposite directions along the same path. Find the relative velocity of ‘A’ with respect to ‘B’.
physics-General
