A lizard, at an initial distance of 21 cm behind an insect, moves from rest with an acceleration of 2 cm/s 2 and pursues the insect which is crawling uniformly along a straight line at a speed of 20 cm/ s. Then when the lizard will catch the insect?

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A lizard, at an initial distance of 21 cm behind an insect, moves from rest with an acceleration of 2 cm/s 2 and pursues the insect which is crawling uniformly along a straight line at a speed of 20 cm/ s. Then when the lizard will catch the insect?

Anonymous User tag : Maths Dynamics 06 Jul, 2020 1 Answer 52 views


A particle has two velocities of equal magnitude inclined to each other at an angle q. If one of them is halved, the angle between the other and the original resultant velocity is bisected by the new resultant. Then q is

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A particle has two velocities of equal magnitude inclined to each other at an angle q. If one of them is halved, the angle between the other and the original resultant velocity is bisected by the new resultant. Then q is

Anonymous User tag : Maths Dynamics 06 Jul, 2020 1 Answer 52 views

A body falling from rest under gravity passes a certain point P. It was at a distance of 400 m from P, 4 s prior to passing through P. If g = 10 m/s 2, then the height above the point P from where the body began to fall is

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A body falling from rest under gravity passes a certain point P. It was at a distance of 400 m from P, 4 s prior to passing through P. If g = 10 m/s 2, then the height above the point P from where the body began to fall is

Anonymous User tag : Maths Dynamics 06 Jul, 2020 1 Answer 51 views


A body weighing 13 kg is suspended by two strings 5 m and 12 m long, their other ends being fastened to the extremities of a rod 13 m long. If the rod be so held that the body hangs immediately below the middle point, Then tensions in the strings are

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A body weighing 13 kg is suspended by two strings 5 m and 12 m long, their other ends being fastened to the extremities of a rod 13 m long. If the rod be so held that the body hangs immediately below the middle point, Then tensions in the strings are

Anonymous User tag : Maths Dynamics 06 Jul, 2020 1 Answer 54 views

A bead of weight w can slide on the smooth circular wire in a vertical plane. The bead is attached by a light thread to the highest point of the wire and in equilibrium, the thread is taut and make an angle  with the vertical then the tension of the thread and reaction of the wire on the bead are

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A bead of weight w can slide on the smooth circular wire in a vertical plane. The bead is attached by a light thread to the highest point of the wire and in equilibrium, the thread is taut and make an angle  with the vertical then the tension of the thread and reaction of the wire on the bead are

Anonymous User tag : Maths Dynamics 04 Jul, 2020 1 Answer 52 views

A body travels a distance s in t seconds. It starts from rest and ends at rest. In the first part of the journey, it moves with constant acceleration f and in the second part with constant retardation r. What will be value of t?

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A body travels a distance s in t seconds. It starts from rest and ends at rest. In the first part of the journey, it moves with constant acceleration f and in the second part with constant retardation r. What will be value of t?

Anonymous User tag : Maths Dynamics 04 Jul, 2020 1 Answer 52 views

Two stones are projected from the top of a cliff h metres high, with the same speed u so as to hit the ground at the same spot. If one of the stones is projected horizontally and the other is projected at an angle of  to the horizontal then tan equals

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Two stones are projected from the top of a cliff h metres high, with the same speed u so as to hit the ground at the same spot. If one of the stones is projected horizontally and the other is projected at an angle of  to the horizontal then tan equals

Anonymous User tag : Maths Dynamics 04 Jul, 2020 1 Answer 52 views


Two particles start simultaneously from the same point and move along two straight lines, one with uniform velocity  and the other from rest with uniform acceleration . Let  be the angle between their directions of motion. The relative velocity of the second particle with respect to the first is least after a time

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Two particles start simultaneously from the same point and move along two straight lines, one with uniform velocity  and the other from rest with uniform acceleration . Let  be the angle between their directions of motion. The relative velocity of the second particle with respect to the first is least after a time

Anonymous User tag : Maths Dynamics 04 Jul, 2020 1 Answer 53 views

A particle moves towards east from a point A to a point B at the rate of 4 km/h and then towards north from B to C at the rate of 5 km/h. If AB = 12 km andBC= 5 km, then its average speed for its journey from A to C and resultant average velocity direct from A to C are respectively

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A particle moves towards east from a point A to a point B at the rate of 4 km/h and then towards north from B to C at the rate of 5 km/h. If AB = 12 km andBC= 5 km, then its average speed for its journey from A to C and resultant average velocity direct from A to C are respectively

Anonymous User tag : Maths Dynamics 04 Jul, 2020 1 Answer 52 views




ABC is a triangle, right angled at A. The resultant of the forces acting along AB, AC with magnitudes 1/AB and 1/AC respectively is the force along AD, where D is the foot of the perpendicular from A to BC. What will be the magnitude of the resultant?

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ABC is a triangle, right angled at A. The resultant of the forces acting along AB, AC with magnitudes 1/AB and 1/AC respectively is the force along AD, where D is the foot of the perpendicular from A to BC. What will be the magnitude of the resultant?

Anonymous User tag : Maths Statistics 01 Jul, 2020 1 Answer 53 views















A couple is of moment and the force forming the couple is . If  is turned through a right angle, the moment of the couple thus formed is . If instead, the forces  are turned through an angle  then the moment of couple becomes

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A couple is of moment and the force forming the couple is . If  is turned through a right angle, the moment of the couple thus formed is . If instead, the forces  are turned through an angle  then the moment of couple becomes

Anonymous User tag : Maths Statistics 30 Jun, 2020 1 Answer 50 views













The parabolas y2 = 4x and x2 = 4y divide the square region bounded by the lines x = 4, y = 4 and the coordinate axes. If S1, S2, S3 are respectively the areas of these parts numbered from top to bottom; then S1 : S2 : S3 is

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The parabolas y2 = 4x and x2 = 4y divide the square region bounded by the lines x = 4, y = 4 and the coordinate axes. If S1, S2, S3 are respectively the areas of these parts numbered from top to bottom; then S1 : S2 : S3 is

Anonymous User tag : Maths Integral Calculus 28 Jun, 2020 1 Answer 55 views





























A spherical iron ball 10 cm in radius is coated with a layer of ice of uniform thickness that melts at a rate of 50 cm3/min. When the thickness of ice is 5 cm, then what will be the rate at which the thickness of ice decreases?

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A spherical iron ball 10 cm in radius is coated with a layer of ice of uniform thickness that melts at a rate of 50 cm3/min. When the thickness of ice is 5 cm, then what will be the rate at which the thickness of ice decreases?

Anonymous User tag : Maths Differential Calculus 21 Jun, 2020 1 Answer 54 views