Normal type of MCQ with one correct option
A system consists of three particles, each of mass m and located at (1, 1), (2,2) and (3, 3). The co-ordinates of the centre of mass are
(1, 1)
(2, 2)
(3, 3)
(6, 6)
/
Normal type of MCQ with one correct option
A body rolls down an inclined plane. If its K.E. of rotational motion is 40% of its K.E. of translation, then the body is
cylinder
ring
solid disc
solid sphere
bottom point B
top point A
the point D
the point C
Normal type of MCQ with one correct option
Two bodies with moment of inertias I1 and I2 (I1 > I2) have equal angular momenta. If K.E. of rotation are E1 and E2, then
E1 = E2
E1 > E2
E1 < E2
E1 ( E2
A,B
B
C,D
A,B & D
Comprehension
A long slended rod of mass 2 kg and length 4 m is placed on a smooth horizontal table. Two particles of masses 2 kg and 1 kg strike the rod simultaneously and struck to rod after collision as shown
Velocity of C.M. of rod after collision is
3 m/s
6 m/s
9 m/s
12 m/s
Comprehension
A long slended rod of mass 2 kg and length 4 m is placed on a smooth horizontal table. Two particles of masses 2 kg and 1 kg strike the rod simultaneously and struck to rod after collision as shown
Angular velocity of rod after collision is
Comprehension
A long slended rod of mass 2 kg and length 4 m is placed on a smooth horizontal table. Two particles of masses 2 kg and 1 kg strike the rod simultaneously and struch to rod after collision as shown If two particles strike the rod in opposite direction, than after collision, as compared to the previous situation, the rod will
Rotate faster and translate slower
Rotate slower and translate faster
Show no change in linear or angular velocity
Rotate faster but translate at the same rate
Assertion(Reason
A.The force of friction in the case of a disc rolling without slipping down an inclined plane is zero.
R.When the disc rolls without slipping, friction is required because for rolling condition velocity of point of contact is zero
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true