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RAJIV GANDHI UNIVERSITY OF KNOWLEDGE TECHNOLOGIES
Weekly Test 5 /SEM!
S"#$e%t& E'()'ee*)'( Me%+,')%s D,te& !-t+SE. -!!
Time: 30 minutes Max. Marks: !-
N0te& T+)s se%t)0' %0's)sts 01 !- 2"est)0's3 E,%+ 2"est)0'
%,**)es ONE 4,*k
A'se* ,ll t+e ,#06e 2"est)0's
N0te&Angle taken in counter clock wise direction is
considered as positive, Forces directed
along positive x and positive y axes are considered as
positive.
1. I particle moves wit! uniorm velocity " along a circular pat!
wit! radius o curvature r,
t!en ind t!e normal acceleration o t!e particle#
a. $ero
b. "%&r
c. d"&dt
d. 'one o t!ese
2. I particle is moving in a straig!t line wit! uniorm velocity
t!en w!at is radius o curvature
o t!e particle#
a. $ero
b. Ininite
c. Finite "alue
d. 'one o t!ese
3. (!at is t!e tangential component o acceleration or a particle
tracing a circular pat!#
a. )ate o c!ange o velocity o t!e particle along tangential
direction
b. )ate o c!ange o velocity o t!e particle along normal
direction
c.)ate o c!ange o speed o t!e particle along tangential
direction
d. )ate o c!ange o speed o t!e particle along normal
direction
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4. T!e relative velocity o particle A w.r.t * +m&s. It is
said t!at speeds o ot! particle are
constant and t!at relative acceleration o particle A w.r.t * is
0.%-m&s%directed towards
t!e centre o curvature. T!en ind speed o A#
a. %0m&s%
b. +0m&s%
c. %m&s%
d. %-m&s%
I t!e rotation o t!e 0./m arm A aout is deined y t!e relation 1
2 0.+-t%, 1 in radians, t in
seconds. ollar * slides along t!e arm as unction o r 2 0./ 4
0.+%t%, w!ere r in meters, t in
seconds.
5. (!en 1 2 30 degrees, ind total velocity o t!e collar#
a. 40./m&s
b. 0.%50m&s
c. 0.-%m&s
d. 0.+m&s
6. (!en 1 2 30 degrees, ind t!e total acceleration o t!e
collar#
a. 60.3/+m&s%
b. 40.3-/m&s%
c.40.-3+m&s
%
d. 0.-3+m&s%
7. A /0.5kg lock rests on a !ori7ontal plane. Find t!e magnitude
o t!er orce 8 w!ic!
makes an angle 30 degrees w.r.t !ori7ontal w!en lock move in
rig!t ward direction wit!
an acceleration 3m&s%. 9k 2 0.%-, 9s2 0.3#
a. 5/'
b. ;;5'
c. -0'
d. /0'
