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A body of mass m is attached to one end of a massless spring which is suspended vertically from a fixed point. The mass is held in hand so that the spring is neither stretched nor compressed. Suddenly the support of the hand is removed. The lowest position attained by the mass during oscillation is 4cm below the point, where it was held in hand.

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A body of mass m is attached to one end of a massless spring which is suspended vertically from a fixed point. The mass is held in hand so that the spring is neither stretched nor compressed. Suddenly the support of the hand is removed. The lowest position attained by the mass during oscillation is 4cm below the point, where it was held in hand.

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A cylindrical log of wood of height h and area of cross-section A floats in water. It is pressed and then released. Show that the log would execute S.H.M. with a time period. `T=2 πsqrt(m/(A ρg))` where m is mass of the body and ρ is density of the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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One end of a V-tube containing mercury is connected to a suction pump and the other end to atmosphere. The two arms of the tube are inclined to horizontal at an angle of 45° each. A small pressure difference is created between two columns when the suction pump is removed. Will the column of mercury in V-tube execute simple harmonic motion? Neglect capillary and viscous forces.Find the time period of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A tunnel is dug through the centre of the Earth. Show that a body of mass ‘m’ when dropped from rest from one end of the tunnel will execute simple harmonic

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A simple pendulum of time period 1s and length l is hung from a fixed support at O, such that the bob is at a distance H vertically above A on the ground (Fig. ). The amplitude is o θ . The string snaps at` θ = θ_ 0 /2`. Find the time taken by the bob to hit the ground. Also find distance from A where bob hits the ground. Assume θ 0 to be small so that ` sinθ_0 and cos θ_0 =1`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Show that simple harmonic motion is the projection of uniform circular motion.

asked Mar 17, 2022 in 11th Physics by varun (6.7k points)

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Use the distributivity of multiplication of rational numbers over addition to simplify

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Use the distributivity of multiplication of rational numbers over addition to simplify

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Use the distributivity of multiplication of rational numbers over addition to simplify

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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Use the distributivity of multiplication of rational numbers over addition to simplify

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Simplify

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Simplify

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

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Simplify

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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Simplify

asked Jan 18, 2022 in 8th-maths by Simran (1.8k points)

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`1/6` of the class students are above average, `1/4` are average and rest are below average. If there are 48 students in all, how many students are below average in the

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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`2/5` of total number of students of a school come by car while `1/4` of students come by bus to school. All the other students walk to schoolof which `1/3` walk on their own and the rest are escorted by their parents. If 224 students come to school walking on their own, how many students study in that

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Huma, Hubna and Seema received a total of Rs. 2,016 as monthly allowance from their mother such that Seema gets `1/2` of what Huma gets and Hubna gets `1 2/3` times Seema’s share. How much money do the three sisters get

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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A mother and her two daughters got a room constructed for Rs. 62,000. The elder daughter contributes `3/8` of her mother’s contribution while the younger daughter contributes `1/2` of her mother’s share. How much do the three contribute

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Shalini has to cut out circles of diameter `1 1/4cm` from an aluminium trip of dimensions `8 3/4cm` by `1 1/4cm`. How many full circles can Shalini cut? Also calculate the wastage of the aluminium

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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