1/3 A stone is projected in air directed at an angle 0 above the horizontal, The maximum angle of projection 0 with the horizontal so that the stone always moves away from the thrower during its motion in air, is (neglect air resistance) 1 (A) sin 3. -1 (B) sin V8 XC) sin sin-1 -1 3 (D) sin 3.
1/3 A stone is projected in air directed at an angle 0 above the horizontal, The maximum angle of projection 0 with the horizontal so that the stone always moves away from the thrower during its motion in air, is (neglect air resistance) 1 (A) sin 3. -1 (B) sin V8 XC) sin sin-1 -1 3 (D) sin 3.
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Question 14 in attached picture
Transcribed Image Text:A stone is projected in air directed at an angle 0 above the horizontal.
The maximum angle of projection 0 with the horizontal so that the
stone always moves away from the thrower during its motion in air, is
(neglect air resistance)
14.
1
(A) sin
3
(B) sin
V8
XC) sin
3
V5
(D) sin
3
A particle moves along a circle of radius R = 10m with retardation so that at any time the modulus
of tangential acceleration is twice the modulus of normal acceleration. If initial speed of the
particle is vo = 20m/s. Then the speed of the particle after having covered a distance s = 10m
would be (take e = 0.135)
(A) 1.7 m/s
(C) 3.7 m/s
5.
%3D
%3D
-2
%3D
B2.7 m/s
(D) 4.7 m/s
6 nails have been fixed on ground such that they
form a hypothetical regular hexagon of side 1 m. A
string of length 6 m has a particle of mass 1 kg
attached to one of its ends. The other end is attached
to one of the nails and the particle is given a velocity
as shown. Then time taken for the particle to strike
m
v = (T/24) m/s
1
2
nail 1 will be:
3
6.
2/3
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