Three girls skating on a circular ice ground

Three girls skating on a circular ice ground of radius 200 m start from point P on the edge of the ground and reach a point Q diametrically opposite to P following different path as shown. What is the magnitude of displacement vector for each? For which girl is this equal to the actual length of path skate? from Physics Motion in A Plane Class 11 CBSE
Three girls skating on a circular ice ground of radius 200m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following different paths as shown in fig. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of the path skate?\n \n \n \n \n
Ncert Exercises & Solutions
Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically
[Punjabi] Three girls skating on a circular ice ground of radius 200 m
Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground

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Three girls skating on a circular ice ground of radius 200 m start from point P on the edge of the ground and reach a point Q diametrically opposite to P following different path as shown. What is the magnitude of displacement vector for each? For which girl is this equal to the actual length of path skate? from Physics Motion in A Plane Class 11 CBSE

Three girls skating on a circular ice ground of radius 200 m start from point P on the edge of the ground and reach a point Q diametrically opposite to P following different path as shown. What is the magnitude of displacement vector for each? For which girl is this equal to the actual length of path skate? from Physics Motion in A Plane Class 11 CBSE Let two vectors a and b be represented by the adjacent sides of a parallelogram OMNP, as shown in the given figure. Here, we can write: OM = | a | ...(i) MN = OP = | b | ...(ii) ON = | a + b | ...(iii) In a triangle, each side is smaller than the sum of the other two sides. Therefore, in ΔOMN, we have, ON < (OM + MN) | a + b | < | a | + | b | ...(iv) If the two vectors a and b act along a straight line in the same direction, then we can write: | a + b | = | a | + | b | ... (v) Combining equations ( iv) and ( v), we get: | a + b | ≤ | a | + | b | Let two vectors a and b be represented by the adjacent sides of a parallelogram OMNP, as shown in the given figure. Here, we have: | OM | = | a | | MN | = | OP | = | b | | ON | = | a + b | In a triangle, each side is smaller than the sum of the other two sides. Therefore, in ΔOMN, we have, ON + MN > OM ON + OM > MN | ON | > | OM - OP | (∵ OP = MN) | a + b | > | | a | - | b | | ...(iv) If the two vectors a and b act along a straight line in the same direction, then we can write: | a + b | = | | a | - | b | | ...(v) Combining equations ( iv) and ( v), we get: | a + b | ≥ | | a | - | b |...

Three girls skating on a circular ice ground of radius 200m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following different paths as shown in fig. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of the path skate?\n \n \n \n \n

Three girls skating on a circular ice ground of radius 200m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following different paths as shown in fig. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of the path skate?\n \n \n \n \n Three girls skating on a circular ice ground of radius 200m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following different paths as shown in fig. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of the path skate? Hint: As a very first step, one could read the question and hence note down the important points given in it. Also analyse the given figure and also recall the definition of displacement and also give how it is different from the distance covered. Thereby, find the answer to the question accordingly. Complete step-by-step solution: In the question, we are given two girls who are skating on a circular ice ground that has a radius of 200m. All three start from a point P on one edge to point Q on the other edge by three different paths A, B and C. We are supposed to find the magnitude of the displacement vector in each of the given paths. We could define displacement as the shortest distance between the initial and final positions of a particle. We see that for all the three cases the initial and final positions are the sa...

Ncert Exercises & Solutions

4.8 Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following different paths as shown in Fig. 4.20. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of path skat e ?

Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically

Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically opposite to p following different paths as shown in the fig. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of path skated? Displacement of each girl = vector PQ = magnitude of the displacement for each girl. = PQ = diameter of the circle (ice ground) = 2 x 200 = 400 m. Actual path length in case of girl B is the least, i.e., equal to the displacement vector. For girls A and C it is the actual length of the path, so it is not equal to the diameter but is grater than that.

[Punjabi] Three girls skating on a circular ice ground of radius 200 m

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Three girls skating on a circular ice ground

Ncert Exercises & Solutions

Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically

[Punjabi] Three girls skating on a circular ice ground of radius 200 m

Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground

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