Thousif

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 and there is no friction And the body starts from rest it's speed at the bottom of the track is

8 years ago

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 engine is

8 years ago

When a body slides along an inclined plane of height 'h' and describes a vertical circle of radius r on reaching the bottom Ans:h =5R/2

8 years ago

A bomb of mass 6 kg initially at rest explodes in to three identical fragments. One of the fragments moves with a velocity of10 3 / im s  , another fragment moves with a velocity if  10 j m/s, then the third fragment moves with a velocity of magnitude.

8 years ago

if the body describes a vertical circle then the minimum velocity at angle theta from lowest position is

8 years ago

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 √2:1

8 years ago

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 aeroplane is 210m/s while diving up from the lowest point of vertical circle, the minimum radius of vertical circle should be...

8 years ago

A small block is freely sliding down from top of a smooth inclined plane the block reaches bottom of inclined plane then the block describes vertical circle of radius 0.5m along smooth track the minimum vertical height of inclined plane should be Ans:1.25...

8 years ago

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 the residual nucleus is.? Ans: 4v/238

8 years ago

A stone dropped from certain point crosses the top and bottom ends of a vertical pole of length 20m in one second the distance of top of the pole from the initial point of release will be (g=10) Ans:11.25m

8 years ago

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 speed of 2m/s The first body stops after the collision The final velocity of the second body is Ans:3m/s

8 years ago

Three particles of equal masses travelling with velocities of 10m/s,20m/s and 30m/s respectively along x-axis at an angle of 30° to the direction of positive x-axis and Y-axis collide simultaneously and get sticked to each other 1)The combined particle wi...

8 years ago

A particle of mass m kinetic energy K momentum p collides head on elastically with another particle of mass 2m at rest A) Momentum of first particle ? B) momentum of second particle? C) kinetic energy of first particle? D) kinetic energy of second particl...

8 years ago

Three point sized bodies each of mass M are fixed at three corners of light triangular frame of length L about an axis perpendicular to the plane of frame passing through centre of frame the moment of inertia of three bodies is Ans : MLsquare

8 years ago

Three point sized bodies each of mass M are fixed at three corners of light triangular frame of length L about an axist hrough any side of frame the moment of inertia of three bodies is Ans:3MLsquare/4

8 years ago

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 10m/s 0.8km/min initially they are at rest and start moving in clockwise direction simultaneously 1)which of the objects have the m...

8 years ago

Weight of an object of 0.5Kgf is 0.5N. 0.5kg. 5kg. 5N

8 years ago

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 another force of magnitude 3F opposite to the direction of momentum P acts on it for 3T seconds Now the magnitude of momentum of...

8 years ago

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 uniform velocity 2m/s.The jet is focused in opposite to the motion of the block the speed of the block after the jet is focused f...

8 years ago

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 surface of planet Y. If mass of X is four times that of Y, ratio of radii of planets X and Y is A) 4:3 B) 3:4 C) 2:1 D) 1:2

8 years ago

Particle moving under influence of a constant force is given by V =√|4-2X| where X is magnitude of displacement of the particle At t=0 initially the particle is noticed to be moving towards east.The distance travelled by the particle in first 5seconds is?...

8 years ago

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 rest and start moving in clockwise direction simultaneously Distance between B and C?

8 years ago

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 metre.then the work done is

8 years ago

If a body is projected vertically up it's velocity decreases to half of its initial velocity at a height 'h' above the ground The maximum height reached by it is Ans:4h/3

8 years ago

The height from which the body is released is numerically equal to the velocity accquired find the that height is equal to Ans:2g

8 years ago

A particle moving along a straight line with a constant acceleration of -4m/s*2 passes through a point A with a velocity of +8m/s at some movement find the distance travelled by the particle in 5sec after that movement? Ans:26m

8 years ago

A particle travels 10m in 5sec and 10m in 5sec and 10m in 3sec assuming constant acceleration what is the distance travelled in next 2sec? Ans:8.3m

8 years ago

Consider a particle initially moving with a velocity of 5m/s starts deaccelarating at a constant rate of 2m/s*2 find the distance travelled in 2sec? Ans:2m

8 years ago

particle travels 10m in 5sec and 10m in 3sec assuming constant acceleration what is the distance travelled in next 2sec? Ans:8.3m

8 years ago

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 velocity of rain relative to the man will be

7 years ago

A roller of mass 300kg and radius 50 cm lying on horizontal floor is resting against step of height 20 cm. the minimum horizontal force to be applied on the roller on the step is Ans:3920N

7 years ago

A liquid is under stream lined motion through a horizontal pipe of non uniform cross section of the volume rate of flow at cross section a is v the volume rate of flow at cross section a/2 is Ans:V

7 years ago

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

7 years ago

a body of mass 4kg is moving with a momentum of 12kg m/s it's kinetic energy 1:3 then ratio of their velocities Ans:1:3

7 years ago

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 body will rise is (take g =10ms^-2)?

7 years ago

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 rise is? Ans4.5m

7 years ago

A bucket containing water of depth of 10cm is kept in a lift which is vertically upwards with an acceleration which is eaqual to 1½ times of acceleration due to gravity. Then pressure intensity at bottom of the bucket is? Ans:250kg/sqcm

7 years ago

A circular disc is rotating about its own axis at constant angular acceleration. If its angular velocity increases from 210 rpm to 420 rpm during 21 rotations then the angular acceleration of disc is

7 years ago

Six identical particles each of mass ‘m’ are arranged at the corners of a regular hexagon of side length ‘L’. If the masses of any two adjacent particles are doubled. The shift in the centre of mass is???

7 years ago

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 second ball directly and itself come to rest the second ball collides with the third and is itself comes to rest if 'e'be the...

7 years ago

It's wrong

8 years ago

Thank you

8 years ago

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

8 years ago

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

7 years ago