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