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Questions (46)

Three balls of mass m1,m2and m3 are lying in straight line. The first ball is moved with certain velocity so that is strikes the
1. 0 answers
2. 587 views
Six identical particles each of mass ‘m’ are arranged at the corners of a regularhexagon of side length ‘L’. If the
1. 1 answer
2. 1,539 views
A circular disc is rotating about its own axis at constant angular acceleration. If its angular velocity increases from 210 rpm
1. 4 answers
2. 1,220 views
A bucket containing water of depth of 10cm is kept in a lift which is vertically upwards with an acceleration which is eaqual to
1. 1 answer
2. 817 views
The body asends a slope with speed 10m/s.If 105J of energy of body is lost doe to friction ;the height to which the body will
1. 1 answer
2. 709 views
A body ascends a slope with a speed of 10ms^-1. If 105 J of energy of the body is lost due to friction , the height to which the
1. 1 answer
2. 706 views
a body of mass 4kg is moving with a momentum of 12kg m/s it's kinetic energy 1:3 then ratio of their velocitiesAns:1:3
1. 1 answer
2. 750 views
On piercing a distance of 15cm in a wooden block a bullet losses of its initial velocity before coming to rest the further
1. 2 answers
2. 724 views
A liquid is under stream lined motion through a horizontal pipe of non uniform cross section of the volume rate of flow at cross
1. 1 answer
2. 667 views
A roller of mass 300kg and radius 50 cm lying on horizontal floor is resting against step of height 20 cm. the minimum
1. 1 answer
2. 795 views
A man is walking due east at the rate of of 4kmph and the rain is falling 30° east of vertical with a velocity of 6kmph the
1. 1 answer
2. 1,039 views
A particle travels 10m in 5sec and 10m in 3sec assuming constant acceleration what is the distance travelled in next 2sec?
1. 0 answers
2. 425 views
particle travels 10m in 5sec and 10m in 3sec assuming constant acceleration what is the distance travelled in next 2sec?
1. 0 answers
2. 421 views
Consider a particle initially moving with a velocity of 5m/s starts deaccelarating at a constant rate of 2m/s*2 find the
1. 1 answer
2. 777 views
A particle travels 10m in 5sec and 10m in 5sec and 10m in 3sec assuming constant acceleration what is the distance travelled in
1. 2 answers
2. 531 views
A particle moving along a straight line with a constant acceleration of -4m/s*2 passes through a point A with a velocity of
1. 0 answers
2. 797 views
The height from which the body is released is numerically equal to the velocity accquired find the that height is equal toAns:2g
1. 1 answer
2. 478 views
If a body is projected vertically up it's velocity decreases to half of its initial velocity at a height 'h' above the ground
1. 1 answer
2. 523 views
A bucket filled with water weighing 50kg is raised from a well of depth 100m.if the linear density of the rope is 1kg per
1. 1 answer
2. 592 views
A body has a momentum of P initially. Force of F (in Newton) in the direction of momentum acts on it for T seconds after that
1. 0 answers
2. 515 views
Three objectsare at vertices of square PQRS of side 1km speed of these objects are 36km/hr 10m/s 0.8km/min initially they are at
1. 0 answers
2. 403 views
A water jet is releasing water at the rate of 1.5kg/s and at a speed of 1m/s is focused normally on a 2kg block moving with a
1. 1 answer
2. 473 views
Particle moving under influence of a constant force is given by V =√|4-2X| where X is magnitude of displacement of the
1. 1 answer
2. 666 views
X and Y are planets.Accelaration due to gravity at a height half the radius from surface of planet X is equal to that of at the
1. 1 answer
2. 392 views
Three objects A, B, C are at vertices P, Q and R respectively of square PQRS of side 1km speed of these objects are 36km/hr
1. 0 answers
2. 466 views
X and Y are planets.Accelaration due to gravity at a height half the radius from surface of planet X is equal to that of at the
1. 0 answers
2. 419 views
A water jet is releasing water at the rate of 1.5kg/s and at a speed of 1m/s is focused normally on a 2kg block moving with a
1. 0 answers
2. 512 views
A body has a momentum of P initially. Force of F (in Newton) in the direction of momentum acts on it for T seconds after that
1. 0 answers
2. 540 views
Weight of an object of 0.5Kgf is0.5N. 0.5kg. 5kg. 5N
1. 1 answer
2. 484 views
Three objects A, B, C are at vertices P, Q and R respectively of square PQRS of side 1km speed of these objects are 36km/hr
1. 1 answer
2. 565 views
Three point sized bodies each of mass M are fixed at three corners of light triangular frame of length L about an axist hrough
1. 6 answers
2. 1,389 views
Three point sized bodies each of mass M are fixed at three corners of light triangular frame of length L about an axis
1. 1 answer
2. 683 views
Three point sized bodies each of mass M are fixed at three corners of light triangular frame of length L about an axis
1. 2 answers
2. 636 views
A particle of mass m kinetic energy K momentum p collides head on elastically with another particle of mass 2m at restA)
1. 2 answers
2. 1,264 views
Three particles of equal masses travelling with velocities of 10m/s,20m/s and 30m/s respectively along x-axis at an angle of
1. 3 answers
2. 1,023 views
A body of mass 5kg moving with a speed of 3m/s collides head on with a body of mass 3kg moving in the opposite direction at
1. 2 answers
2. 2,466 views
A stone dropped from certain point crosses the top and bottom ends of a vertical pole of length 20m in one second the distance
1. 3 answers
2. 3,382 views
A U-238 nucleus originally at rest , decays by emitting an alpha- particle , say with a velocity of vm/s. The recoil (in m/s) of
1. 2 answers
2. 1,014 views
A small block is freely sliding down from top of a smooth inclined plane the block reaches bottom of inclined plane then the
1. 1 answer
2. 1,102 views
A pilot of mass m can bear a maximum apparent weight 7 times of mg.The aeroplane is moving in vertical circle.if the velocity of
1. 1 answer
2. 1,587 views
a body is moving in a vertical circle such that the velocities of body at different points are critical the ratio of velocities
1. 4 answers
2. 2,943 views
if the body describes a vertical circle then the minimum velocity at angle theta from lowest position is
1. 1 answer
2. 516 views
A bomb of mass 6 kg initially at rest explodes in to three identical fragments. Oneof the fragments moves with a velocity of10 3
1. 2 answers
2. 1,767 views
When a body slides along an inclined plane of height 'h' and describes a vertical circle of radius r on reaching the bottomAns:h
1. 4 answers
2. 2,480 views
A car weighing 1000kg is going up an incline with a slope of 2 in 25 at a steady speed of 18kmph.If g=10m/s2, the power of its
1. 6 answers
2. 2,874 views
A body slides down a curved track which is one quadrant of a circle of radius R. If it starts from rest at the top of the track
1. 0 answers
2. 653 views

Answers (4)

On piercing a distance of 15cm in a wooden block a bullet losses of its initial velocity before coming to rest the further distance travelled by it is Ans:5cm
a body is moving in a vertical circle such that the velocities of body at different points are critical the ratio of velocities of body at angular displacements 60° 120° from lowest point is And =√2:1
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