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A train takes 2 minutes to acquire its full speed 60 kph from rest and 1 minute to come to rest from the full speed. If some where in between two stations 1 km of the track be under repair and the limited speed on this part be fixed to 20 kph, find the late running of the train on account of this repair work, assuming otherwise normal at running of the train between the stations.
24
Aug
A train takes 2 minutes to acquire its full speed 60 kph from rest and 1 minute to come to rest from the full speed. If some where in between two stations 1 km of the track be under repair and the limited speed on this part be fixed to 20 kph, find the late [...]
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(b) the magnitude and direction of the displacement in the 5 s interval from the fifth to the lenth second ,
(c) average velocity in this interval ,
(d) the instantaneous velocity at the begining and at the end of the interval. ,
7.5s and 10 s later ,
A particle travels with constant speed along a circle of radius 3m and completes one revolution in 20s. Starting with the lowest point as origin ,
find (a) the magnitude and direction of the displacement vectors 5 s ,
Two trains ,
Two trains, each with a speed of 50 kmph are headed towards each other on the same trake. A bird that can fly at the rate of 100kmph flies off one train when they are 100km apart and heads directly to the other train. On reaching the other train it flies back to the first train and so forth. (a) How many trips can the bird make from one train to the other before they crash ? (b) How is the total distance the bird travels ?
24
Aug
Two trains, each with a speed of 50 kmph are headed towards each other on the same trake. A bird that can fly at the rate of 100kmph flies off one train when they are 100km apart and heads directly to the other train. On reaching the other train it flies back to the first [...]
Tags:
(b) the magnitude and direction of the displacement in the 5 s interval from the fifth to the lenth second ,
(c) average velocity in this interval ,
(d) the instantaneous velocity at the begining and at the end of the interval. ,
7.5s and 10 s later ,
A particle travels with constant speed along a circle of radius 3m and completes one revolution in 20s. Starting with the lowest point as origin ,
find (a) the magnitude and direction of the displacement vectors 5 s ,
Two trains ,
A ball of mass 2kg and another of mass 4 kg are dropped together from a 60 feet tall building. After a fall of 30 feet each towards earth, their respective kinetic energies will be in the ratio of
24
Aug
A ball of mass 2kg and another of mass 4 kg are dropped together from a 60 feet tall building. After a fall of 30 feet each towards earth, their respective kinetic energies will be in the ratio of A ball of mass 2kg and another of mass 4 kg are dropped together from a [...]
Starting from rest ,a body slides down a 45 degree inclined plane in twice the time it takes to slide down the same distance in the absence of friction .The coefficient of friction between the body and inclined plane is
24
Aug
Starting from rest ,a body slides down a 45 degree inclined plane in twice the time it takes to slide down the same distance in the absence of friction .The coefficient of friction between the body and inclined plane is a body slides down a 45 degree inclined plane in twice the time it takes [...]
A heavy uniform chain lies on a horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25, then find the maximum friction of the length of the chain that can hang over one edge of the table.
24
Aug
A heavy uniform chain lies on a horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25, then find the maximum friction of the length of the chain that can hang over one edge of the table. A heavy uniform chain lies on a horizontal table top. If [...]
A particle travels with constant speed along a circle of radius 3m and completes one revolution in 20s. Starting with the lowest point as origin, find (a) the magnitude and direction of the displacement vectors 5 s, 7.5s and 10 s later , (b) the magnitude and direction of the displacement in the 5 s interval from the fifth to the lenth second, (c) average velocity in this interval, (d) the instantaneous velocity at the begining and at the end of the interval.
24
Aug
A particle travels with constant speed along a circle of radius 3m and completes one revolution in 20s. Starting with the lowest point as origin, find (a) the magnitude and direction of the displacement vectors 5 s, 7.5s and 10 s later , (b) the magnitude and direction of the displacement in the 5 s [...]
Tags:
(b) the magnitude and direction of the displacement in the 5 s interval from the fifth to the lenth second ,
(c) average velocity in this interval ,
(d) the instantaneous velocity at the begining and at the end of the interval. ,
7.5s and 10 s later ,
A particle travels with constant speed along a circle of radius 3m and completes one revolution in 20s. Starting with the lowest point as origin ,
find (a) the magnitude and direction of the displacement vectors 5 s ,
Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyre and the road is 0.5, the shortest distance in which the car can be stopped is?(Take g=10m/s^2)
24
Aug
Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyre and the road is 0.5, the shortest distance in which the car can be stopped is?(Take g=10m/s^2) Consider a car moving along a straight horizontal road with a speed of 72 [...]
A block has been placed on an inclined plane with the slope angle θ, block slides down the plane at constant speed. The coefficient of kinetic friction is equal to:
24
Aug
A block has been placed on an inclined plane with the slope angle θ, block slides down the plane at constant speed. The coefficient of kinetic friction is equal to: A block has been placed on an inclined plane with the slope angle θ block slides down the plane at constant speed. The coefficient of [...]
The driver of a train moving at a speed v1 sights another train at a disane d, ahead of him moving in the same direction with a shower speed v2. He applies the brakes and gives a constant teradation a to his train. Show that here will be no collision if d>(v1−v2)2/2a.
24
Aug
The driver of a train moving at a speed v1 sights another train at a disane d, ahead of him moving in the same direction with a shower speed v2. He applies the brakes and gives a constant teradation a to his train. Show that here will be no collision if d>(v1−v2)2/2a. ahead of him [...]
The maximum speed of a car on a road turn of radius 30m, if the coefficient of friction between the tyres and the road is 0.4 ? g==9.8 m/s^2
24
Aug
The maximum speed of a car on a road turn of radius 30m, if the coefficient of friction between the tyres and the road is 0.4 ? g==9.8 m/s^2 if the coefficient of friction between the tyres and the road is 0.4 ? g==9.8 m/s^2 The maximum speed of a car on a road turn [...]