CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Displacement

A man weighin...

Question

A man weighing 80 kg is standing at the centre of a flat boat and he is 20 m away from the shore. He walks 8 m on the boat towards the shore and then comes to a halt. The boat weighs 200 kg. How far is he from the shore at the end of this time?

A

11.2 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

13.8 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

14.3 m

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

15.4 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 14.3 m
Centre of mass will not move in horizontal direction. Let x be the displacement of boat.
$80 (8 - x) = 200 x$
$640 - 80 x = 200 x$
$x = 2.3 m$
Now, required distance from the shore,
$20 - (8 - x) = 20 - (8 - 2.3)$
$= 20 - 5.7 = 14.3 m$

Suggest Corrections

thumbs-up

24

Similar questions

Q. A man weighing

80 k g

is standing at the centre of a flat boat and he is

20 m

from the shore. He walks

8 m

on the boat towards the shore and then halts. The boat weight

200 k g

. How far is he from the shore at the end of this time?

Q. A man weighing 80 kg is standing at the centre of a flatboat and he is 20 m from the shore. He walks 8 m on the boat towards the shore and then halts. The boat weight 200 kg. How far is he from the shore at the end of this time?

Q. A man weighing 72.5 kg stands in a boat so that he is 4.58 m from the shore. He walks 2.44 m in the boat towards the shore and then stops. How far from the shore will he be at the end of this time? The boat weighs 90.7 kg, and there is assumed to be no friction between it and the water.

Q. A man weighing

60 kg

is standing on a flat boat so that he is at a distance of

10 m

from the shore. The boat weighs

20 kg

and there is no friction between it and the water. If the man walks

4 m

relative to the boat towards the shore and stops, then how far is the man from the shore?

Q. A dog weighting

5 k g

is standing on a flat boat so that it is

10 m

from the shore. The walks on the boat towards the shore and then halts. The boat weights

20 k g

and one can assume that then no friction between it and the water. How far is the dog from the shore at the end of this time ?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Distance and Displacement

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon