Q)
(chatquestion)...body after 2s is :
the
Gc=ims2
(2) 25 ms-2 (3) 15 ms(4) 7 ms-2
(1) 2 ms-2
A sphere of mass m, moving with velocity v, enters
a hanging bag of sand and stops. If the mass of
the bag is M and it is raised by height h, then the
velocity of the sphere was : By LOCD Linear Mon.
mV=(mmsyet
5.
M+m
(1)
/2 gh By
/2gh
LOC of Eney
(2)
m
Vsystem /2gh
m 2 gh fm Owe get
/2 gh
om
om
of
(3)
M+m
(4)
V=[MMNgh
E Two solid rubber balls A and B having mases
ma 200 and 400 g, respectively, are moving in
opposite directions with velocity of A equal to
Vel. -0.3 m/s. After collision, the two balls come to rest,
Aia to daw o Cons
miXU,tmXV2
(2) 1.5 m/s A Both the ball
me to rest after
m2=0-4bg.
then the velocity of B is :
(1) 0.15 m/s2 Y0:3 Ho 4XU0
V=02X0.3
0.4
(3) 0.10 m/s
(4) None of
above
ousim-mik, +m
M 7.
41
A particle is moving on a circular path of radius
with uniform velocity v. The changein velocity
when the particle moves from P to Q'isZPOQ = 40°)
Suppse at the PÅ 9
m the ireuler Path
the Paut
Ve
0-40
vel.
V.
if
(1) 2v cos 40°
(2) 2v sin 40°
(3) 2v sin 20
8.
(4) 2v cos 20°
A particle is moving with a uniform speed in a
circular orbit of radius R in a central force
inversely proportional to the nth power of R. If the
period of rotation of the particle is T, then:
(1) Toc R
(2) Toc R
for any n
(3) To R2
(4) Toc Ra/2
100
...
