Displacement of COM:Application
Trending Questions
- leftward and downward
- rightward and downward
- leftward and upwards
- only downward
- 3 m
- 2.3 m
- 0 m
- 0.75 m
- 90 m
- 60 m
- 80 m
- 70 m
- M(R−r)M+m
- m(R−r)M+m
- (M+m)RM
- None
- 103 m
- 53 m
- 23 m
- 0 m
- 15 cm
- 20 cm
- 13 cm
- 10 cm
- 10 m
- 20 m
- 30 m
- 25 m
- 1607 m
- 807 m
- 207 m
- 407 m
- 5√2 m
- 5√2 m
- 5 m
- 2√5 m
A cubical block of ice of mass 'm' and edge 'L' is placed in a large tray of mass 'M'. If the ice melts, how far does the centre of mass of the system "ice plus tray” come down with reference to the point O as shown in figure
mLm+M
mLm+M
(M+m)Lm
(M+m)LM
The balloon, the light rope and the monkey shown in figure are at rest in the air. If the monkey reaches the top of the rope , by what distance does the ballon descent? Mass of the balloon = M , mass of the monkey = m and the lenght of the rope ascended by the monkey = L.
mLm+M upwards
mLm+M downwards
MLm+M upwards
MLm+M downards
- depends on height of breaking
- does not shift
- body C
- body B
A mon of mass 'm' moves on a plank of mass 'M' with a constant velocity 'u' with respect to the plank (as shown in the figure). If the plank rests on a smooth horizontal surface, then determine the final velocity of the plank.
mu(m+M)
Mu(M+m)
(M+m)um
M+mM u
A block of mass 'M' is placed on the top of a bigger inclined plane of mass '10M' as shown in figure. All the surfaces are frictionless. The system is released from rest. Find the distance moved by the bigger block at the instant the smaller block reaches the ground.
0.2m
0.4m
0.1m
0.3m
Cosider a gravity - free hall in which a tray of mass M , carrying a cubical block of ice of mass m and edge L , is at rest in the middle. If the ice melts, by what distance does the centre of mass of "the tray plus the ice" system descent ?
−mL2(M+m)
−mL2(M+m)
Zero
−2mL3(M+m)
- (R2+R+1)(2−R)=1
- (R2−R−1)(2−R)=1
- (R2−R+1)(2−R)=1
- (R2+R−1)(2−R)=1
- 2 units
- 2√2 units
- 2√3 units
- 0 units
- depends on height of breaking
- does not shift
- body C
- body B
- 8 m
- 4.5 m
- 1.33 m
- 2.66 m
- 15 cm
- 20 cm
- 13 cm
- 10 cm
- 3L4
- L4
- 4L5
- L3
- Vertical direction
- Any direction
- Horizontal direction
- Same parabolic path
- v√mk
- 2v√mk
- 3v√mk
- 0.5v√mk
A block of mass 'M' is placed on the top of a bigger inclined plane of mass '10M' as shown in figure. All the surfaces are frictionless. The system is released from rest. Find the distance moved by the bigger block at the instant the smaller block reaches the ground.
0.2m
0.4m
0.1m
0.3m
- (M+mm)l
- (Mm+M)l
- (mM+m)l
- (M+mM)l
Two masses - ' √3m' and '√2m' are tied by a light string are placed on a wedge of mass '4m'. The wedge is placed on a smooth horizontal surface. Find out the value of θ such that the wedge does not move even after the system is set free from the state of rest.
30∘
45∘
60∘
none of these
- L
- L4
- 3L4
- L3
- Heavier piece
- Lighter piece
- Does not shift horizontally
- Depends on the vertical velocity at the time of breaking
- mlM+m
- MlM+m
- mMl
- Mml