Test Index

JEE Advanced 2020 Full Test 4 Paper 1

© examsnet.com

Question : 10

Total: 54

A strip of wood of mass M and length ℓ is placed on a smooth horizontal surface. An insect of mass m starts at one end on the strip and walks to the other end in time t, moving with a constant speed.

the speed of the insect as seen from the ground is <‌
ℓ
t
.
the speed of the strip as seen from the ground is ‌
ℓ
t
(‌
M
M+m
)
the speed of the strip as seen from the ground is ‌
ℓ
t
(‌
m
M+m
)
the total kinetic energy of the system is ‌
1
2
(m+M)(‌
ℓ
t
)2

Go to Question:

Prev Question

Next Question