Welcome to your Rotational Motion -4
1.
If ∑mᵢxᵢ = 0, COM lies
2.
If mass density is doubled everywhere, COM
3.
If all particles lie in x–y plane, COM lies
4.
On changing the origin, COM coordinates
5.
In absence of external force, COM
6.
Vector form of COM is given by
7.
Two particles of equal mass are separated by distance d. COM is
8.
COM of a rod with linearly increasing density lies
9.
COM of a thin uniform rod is independent of
10.
COM of a uniform semicircular disc lies on
11.
COM of a hollow sphere lies
12.
COM of a triangular wire frame lies at
13.
Two masses m and 3m are separated by distance d. Distance of COM from m is
14.
COM of a uniform triangular lamina lies at
15.
If origin is at the COM of a system, then ∑mᵢrᵢ equals
16.
Centre of mass depends on
17.
For a continuous mass distribution, COM is calculated using
18.
COM of an L-shaped uniform wire lies
19.
Two particles of masses 2 kg and 6 kg are placed at x = 0 m and x = 4 m. Find COM.
20.
COM of non-uniform rod lies
21.
COM of a perfectly symmetric body lies
22.
COM of a solid hemisphere of radius R lies at
23.
Two particles repel each other due to internal force. COM
24.
COM of a uniform cube lies at
25.
COM of a uniform disc with off-centre hole lies
26.
COM of a semicircular lamina of radius R lies at
27.
Masses 1 kg, 2 kg and 3 kg are at vertices of an equilateral triangle. COM is
28.
If one particle is removed from system, COM
29.
Three equal masses are placed at x = 1 m, 3 m and 5 m. COM lies at
30.
A projectile explodes at the highest point. COM
31.
COM of a uniform circular wire lies at
32.
A uniform rod of length L lies along x-axis. COM is at
33.
Two equal masses rotate about each other. COM is
34.
Equal masses at vertices of a square have COM at
35.
A system of particles experiences only internal forces. Motion of COM is
36.
COM of a uniform ring lies at
37.
COM of a uniform square lamina lies at
38.
A system has total mass zero. COM is
39.
COM of an isolated system always moves
40.
COM of a system can lie
41.
Masses m, 2m, 3m are at x = 0, a, 2a. COM is at
42.
If m₁x₁ + m₂x₂ = 0, COM lies
43.
A uniform disc has a concentric circular hole removed. COM
44.
A uniform rod bent into a semicircle has COM at
45.
A particle explodes into two equal fragments in space. COM
