Part 1
A force F = 3i – 2j 4k displace a body from a point A(8, -2, -3) to the point B(-2, 0, 6). The work done is
27
Oct
A force F = 3i – 2j 4k displace a body from a point A(8, -2, -3) to the point B(-2, 0, 6). The work done is -3) to the point B(-2 2 6). The work done is A force F = 3i - 2j 4k displace a body from a point A(8 October 27, [...]
A man is walking on a level road at a speed of 3.0 km/h. Rain drops fall vertically with a speed of 4.0 km/h. Find the velocity of the raindrops with respect to the man.
27
Oct
A man is walking on a level road at a speed of 3.0 km/h. Rain drops fall vertically with a speed of 4.0 km/h. Find the velocity of the raindrops with respect to the man. A man is walking on a level road at a speed of 3.0 km/h. Rain drops fall vertically with a [...]
To a man walking due east at the rate of 2 km/hr with respect rain appears to fall vertically. When he increases his speed to 4km/hr in the same direction of his motion, rain appears to meet him at an angle of 45 degree with horizontal, Find the speed of rain of the rain relative to ground.
27
Oct
To a man walking due east at the rate of 2 km/hr with respect rain appears to fall vertically. When he increases his speed to 4km/hr in the same direction of his motion, rain appears to meet him at an angle of 45 degree with horizontal, Find the speed of rain of the rain relative [...]
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Find the speed of rain of the rain relative to ground. ,
rain appears to meet him at an angle of 45 degree with horizontal ,
To a man walking due east at the rate of 2 km/hr with respect rain appears to fall vertically. When he increases his speed to 4km/hr in the same direction of his motion ,
During a rainy day, rain is falling vertically with a velocity 2m/s A boy at rest starts his motion with a constant acceleration of 2m/s2 along a straight road . Find the rate at which the angle of the axis of umbrella with vertical should be changed so that the rain always falls parallel to the axis of the umbrella.
27
Oct
During a rainy day, rain is falling vertically with a velocity 2m/s A boy at rest starts his motion with a constant acceleration of 2m/s2 along a straight road . Find the rate at which the angle of the axis of umbrella with vertical should be changed so that the rain always falls parallel to [...]
The rain is falling vertically with a velocity 6m/s. To a cyclist moving horizontal with road, the rain appears to be falling with a speed of 10 m/s Find the velocity of the cyclist.
27
Oct
The rain is falling vertically with a velocity 6m/s. To a cyclist moving horizontal with road, the rain appears to be falling with a speed of 10 m/s Find the velocity of the cyclist. the rain appears to be falling with a speed of 10 m/s Find the velocity of the cyclist. The rain is [...]
To a man walking at the rate of 3km/h the rain appear to fall vertically downwards. If he doubled his speed the rain appears to fall at an angle of 30^∘ with vertically. Find the speed of rain with respect to ground.
27
Oct
To a man walking at the rate of 3km/h the rain appear to fall vertically downwards. If he doubled his speed the rain appears to fall at an angle of 30^∘ with vertically. Find the speed of rain with respect to ground. A body is projected vertically upwards with a velocity 10m/s . It reaches [...]
A swimmer crosses a river with minimum possible time 10 Second. And when he reaches the other end starts swimming in the direction towards the point from where he started swimming. Keeping the direction fixed the swimmer crosses the river in 15 sec. The speed of river flow and swimmer is constant. Find the ratio of speed of swimmer with respect to water and the speed of river flow.
27
Oct
A swimmer crosses a river with minimum possible time 10 Second. And when he reaches the other end starts swimming in the direction towards the point from where he started swimming. Keeping the direction fixed the swimmer crosses the river in 15 sec. The speed of river flow and swimmer is constant. Find the ratio [...]
A man can swim in still water with a speed of 3m/s x and y axis are drawn along and normal to the bank of river flowing to right with a speed of 1m/s. The man starts swimming from origin O at t = 0 second. Assume size of man to be negligible. Find the equation of locus of all the possible points where man can reach at t = 1 sec
27
Oct
A man can swim in still water with a speed of 3m/s x and y axis are drawn along and normal to the bank of river flowing to right with a speed of 1m/s. The man starts swimming from origin O at t = 0 second. Assume size of man to be negligible. Find the [...]
A swimmer can swim with velocity 5m/s relative to a river so as to reach a point directly opposite to his starting point. The velocity of river is 3 m/s and it is 40 m wide. Find the time in which the swimmer cross the river.
27
Oct
A swimmer can swim with velocity 5m/s relative to a river so as to reach a point directly opposite to his starting point. The velocity of river is 3 m/s and it is 40 m wide. Find the time in which the swimmer cross the river. A body is projected vertically upwards with a velocity [...]
Swimmer is swimming with the velocity 15 m/s relative to river in the direction perpendicular to the river flow. The river is 750 m wide and is flowing with a speed of 4m/s. Find the time taken by the boat to reach the opposite bank.
27
Oct
Swimmer is swimming with the velocity 15 m/s relative to river in the direction perpendicular to the river flow. The river is 750 m wide and is flowing with a speed of 4m/s. Find the time taken by the boat to reach the opposite bank. A body is projected vertically upwards with a velocity 10m/s [...]