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Ariba and Ayaan decided to use nails and a thread to make a circle on the ground. Ariba took a thin rope of length 5 meters and tied nails on both ends of the rope. Ariba fixed one end of the rope in the ground and kept holding it. She gave other end of rope to Ayaan and asked him to draw a circle. Similarly Ayaan took a thin rope of length 3 meters and made a circle in a same manner. What will be the ratio of areas of these two circles?
A stone tied to the end of string 80cm long is whirled in horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 sec, what is the magnitude of acceleration of the stone?
A stone tied at the end of a string is whirled in a circle. When the string breaks, the stone ___________
A stone of mass m tied to one end of a string of length l is rotated in a circle with the other end of the string as the centre. The speed of the stone is v. If the string breaks, the stone will ___________
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/ passage and find out which of the four combinations is correct. 1. A gentleman was walking through an elephant camp. P. He spotted that the elephants weren’t being kept in cages or held by the use of chains.  Q. As the man gazed upon the elephants, he was completely confused as to why the elephants didn’t just use their strength to break the rope and escape the camp. R. Curious and wanting to know the answer, he asked a trainer nearby why the elephants were just standing there and never tried to escape. S. All that was holding them back from escaping the camp, was a small piece of rope tied to one of their legs. 6. The trainer replied, "When they are young and smaller, they are tied in these ropes which they are unable to break. By the time they grow bigger and strong enough to break the rope, they are already conditioned to believe that they can't break the ropes."
A uniform rope is suspended from the roof of a building. The rope breaks if the tension in the rope is greater than 700 N. A man of mass 50 kg climbs up the rope. Find the maximum acceleration with which he can climb up the rope (g = 10 m/s2)
A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is,
Mayank is doing an experiment in the lab with a bob of mass 10 Kg and a string of 6 m. He tied a string with the laboratory roof and another end with the bob. He then tied another string at 3 m below the roof with the previous one as shown in the figure. Find the tension T1 in the string? g =10 m/s2
There are two huts of two brothers each on the opposites sides of a medium sized pond. Each brother has to use 12 stones in the pond to visit each other’s hut by crossing the pond. These stones are numbered serially using numbers one to twelve. A dragon fly is jumping on these stones as follows; every minute it jumps to the fifth stone from where it started. Thus if it jumps from the fourth stone it would go to the ninth stone, from the ninth stone it would go to the second stone and so on. Select the option that indicates the number of stones on which this dragon fly would be resting if it stops jumping at the 36th minute if it starts jumping from the stone that is numbered two.
A stone tied to the end of a string is swirled with a constant speed, such that the stone follows a circular path in horizontal plane. Which of the following statement is not true?