A man of height 1.2 m walks away from a ...

A man of height 1.2 m walks away from a lamp hanging at a height of 4.0 m above ground level. If the man walks with a speed of `2.8 m//s`, determine the speed of the tip of man's shadow.

Text Solution

Verified by Experts

The correct Answer is:

`[4 m//s]`

Topper's Solved these Questions

KINEMATICS
PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs with One or More Options Correct|17 Videos
GRAVITATION
PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|94 Videos
LINEAR MOMENTUM & ITS CONSERVATION
PHYSICS GALAXY - ASHISH ARORA|Exercise exercise 1.3|3 Videos

Similar Questions

Explore conceptually related problems

A man who is 1.6 m tall walks away from a lamp which is 4 m above ground at the rate of 30 m/min. How fast is the man's shadow lengthening?

A man of height 2m walks directly away from a lamp of height 5 m on a level road at 3m//s . The rate at which the length of his shadow is increasing is

If a man increase his speed by 2m/s, his K.E. is doubled, the original speed of the man is

A man of height 180 cm is moving away from a lamp post at the rate of 1.2 meter per second. If the height of the lamp post is 4.5 meters, find the rate at which (i) his shadow is lengthening. (ii) the tip of the shadow is moving.

A lamp is hanging at a height of 4 m above a table. The lamp is lowered by 1 m . The percentage increase in illuminace will be

A man of height 1.8 metre is moving away from a lamp post at the rate of 1.2m//sec . If the height of the lamp post be 4.5 metre, then the rate at which the shadow of the man is lengthening is

A man runs towards a mirrorr at a speed 15m//s. The speed of the image relative to the man is

A man 2 metres tall walks away from a lamp post 5 metres height at the rate of 4.8 km/hr. The rate of increase of the length of his shadow, is

A man of height 'h' is walking away from a street lamp with a constant speed 'v' .The height of the street lamp is 3h The rate at which of the length of man's shadow is increasingwhen he is at a distance 10h from the base of the street lamp is:

PHYSICS GALAXY - ASHISH ARORA-KINEMATICS-Unsolved Numerical Pro.

Two blocks A and B are shown in figure. Block A moves to the left with...
Text Solution
|
In figure block A starts from rest and moves upward with a constant a...
Text Solution
|
A man of height 1.2 m walks away from a lamp hanging at a height of 4....
Text Solution
|
A particle moves in a straight line with the velocity curve shown in f...
Text Solution
|
A point mass starts moving in a straight line with a constant accelera...
Text Solution
|
A car C(1) travelling at a uniform speed of 75 kph passed another C(2...
Text Solution
|
A helicopter takes off along the vertical with an acceleration a = 3m/...
Text Solution
|
Two trucks are moving in a straight line towards each other at initial...
Text Solution
|
Block 5 shown in figure moves to the right with a constant velocity of...
Text Solution
|
At t = 0, block B in figure starts moving with a velocity 15 cm/s and ...
Text Solution
|
A stone is dropped from the top of a cliff of height h. ''n'' seconds ...
Text Solution
|
How long will a plane take to fly around a square with side a with the...
Text Solution
|
The motion of an in secton at able is given as x = 4t-2 sin t and y = ...
Text Solution
|
Two motor cars start from A simultaneously & reach B after 2 hour. The...
Text Solution
|
A body of mass m is thrown straight up with a velocity Mq. Find the ve...
Text Solution
|
In a village Shyam bats for hitting two points A and B on a staircase ...
Text Solution
|
A ship moves along the equator to the east with velocity v0=30km//hour...
Text Solution
|
Point A moves uniformly with velocity nu so that the vector v is conti...
Text Solution
|
The speed of a train increases at a constant rate alpha from zero to v...
Text Solution
|
The position vector vec(r) of a moving particle at time t after the st...
Text Solution
|