0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

A fish and bird are moving as shown in figure. Find the velocity of bird as observed by fish.
1148440_309e837434fd45a8b79863a905320102.png
  1. 8 m/s upwards
  2. 8 m/s downwards
  3. 9 m/s downwards
  4. 9 m/s upwards

A
8 m/s downwards
B
9 m/s upwards
C
8 m/s upwards
D
9 m/s downwards
Solution
Verified by Toppr

Distance between bird and fish as observed by fish
R=x+μy
Differentiating w.r.t. 't'
dRdt=dxdt+μdydt

dRdt velocity of bird observed by fish

dxdt velocity of fish

dydt velocity of bird

Taking downward direction as +ve
dRdt=24+43×12

=24+16
=8 m/s
i.e., 8 m/s upward.

1446177_1148440_ans_a8b3e473486f43329ebae8413595eb40.png

Was this answer helpful?
4
Similar Questions
Q1
A fish and bird are moving as shown in figure. Find the velocity of bird as observed by fish.
1148440_309e837434fd45a8b79863a905320102.png
View Solution
Q2
A bird in air is diving vertically downward over a tank with speed 5 cm/s while base of tank is silvered. A fish in the tank is rising upward along the same line with speed 2 cm/s. Water level is falling at rate of 2 cm/s. Take μwater=4/3.

View Solution
Q3
Find out the velocity of block E for the arrangement as shown in figure. Consider all pulleys to be light and frictionless. All surfaces are smooth and the string is massless and inextensible.


View Solution
Q4

A bird is flying 3 m above the surface of water. If the bird is diving vertically down with speed = 6 m/s, his apparent velocity as seen by a stationary fish underwater is:


View Solution
Q5
Find the velocity of block A i.e. VA and velocity of block C i.e. VC respectively in the shown figure.

View Solution