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Ayesha Ahmed
Subject: Physics
, asked on 22/4/17
Please help
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 7/3/17
NO LINKS PLEASE
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 7/3/17
A vertical rod is fixed on a rotating table at a distance
r
from the axis of rotation. A body is suspended by a string of length
l
which is tied at the upper end of the rod. If the string makes an angle
ɵ
with the vertical, show that the angular velocity of the table is equal to
root(g*tan
ɵ
)
/
root(r+l*sin
ɵ
)
[** This question has no diagram. So I cannot give any meaningful diagram**]
NO LINKS PLEASE
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 6/3/17
Two points are taken on a massless wie
OC
, such that
OA = AB = BC
. Three bodies of equal mass are tied at the points.
A
,
B
and
C
and the system is kept on a horizontal smooth table. Keeping the wire taut, if the system is rotated around the point
O
, then what will be the ratio of ensions in the three parts of the wire ?
[
Answer :
6 : 5 : 3
]
NO LINKS PLEASE
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 6/3/17
A light mass
m
and another heavier mass
M
are connected by a light inextensible string which passes through a
smooth and narrow vertical tube
. Keeping the length
l
of the string inclined at an angle theta with the tube, with what frequency should the mass
m
be rotated in a horizontal so that the mass
M
will remain in equilibrium.
[
Answer
: [ {root (Mg) } / { 2*pi*root(ml) } ]
]
NO LINKS PLEASE
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 6/3/17
A small body is kept at a distance of 7 cm from the centre of a gramophone disc. The disc starts rotating with gradually increasing speed and the body is is just on the verge of being thrown off when the disc rotates 60 times a minute. What will be the speed of the of the disc when the body, kept at a distance of 12 cm from the centre, is just thrown off? What will be the rotational speed, when a body of double mass is kept at the previous position of 7 cm away from the centre ?
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 6/3/17
A sphere of mass 200 g remains suspended from a rigid support by means of a thread of length 130 cm. The sphere is rotated in a horizontal circular path of radius 50 cm. Determine its time period of rotation and tension in the thread.
[
Answer :
2.2 s , 2.123 N
]
NO LINKS PLEASE
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 6/3/17
A mass of 60 g remains attached to the end of a thread of length 4 m. The mass is rotated uniformly in a horizontal circular path. The plane of this circular path is at a vertical distance of 3.2 m from the upper end of the thread. Determine the tension in the thread and the time period of revolution of the mass.
[
Answer :
0.735 N ; 3.59 s
]
NO LINKS PLEASE
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 6/3/17
A body of mass
4 kg
is connected to the two ends of a vertical rod of length
2 m
by two threads of length
1.5 m
each. The body is rotated about the rod as an axis. To produce a tension of
70 N
on the upper string what should be the rpm of the body ? What will be the tension in the lowest string then ?
[
Answer :
35.1 rpm, 11.2 N
]
NO LINKS PLEASE
Answer
1
Cecilia Daniel
Subject: Physics
, asked on 2/2/17
A disc of diameter 2 m rotates with the frequency 100 Hz. What is the speed of the point on the surface of disc 1 m from the axis of rotation?
Answer
1
Manideep Varma
Subject: Physics
, asked on 27/11/16
the eqvivalent resistance of three parallel resistors 30 ohms are in the ratio 1: 3: 5.the resistance of resistors are
Answer
2
Atharva Gulhane
Subject: Physics
, asked on 28/10/16
Can you please provide me with an easier solution for the question i have posted This question belongs to HCVerma ...But no links please!
Answer
1
Shivani Nimbarte
Subject: Physics
, asked on 1/12/15
the distance between two rails is 1.6 m. along a curve of radius of curvature 800 m,the outer rail is raised above the inner rail by 10cm. with what maximum speed a train be safely driven along the curve?
Answer
1
Shivani Nimbarte
Subject: Physics
, asked on 1/12/15
a road is 5 m wide and the elevation of the outer edge of the road is 0.75 m. find the maximum speed with which the car can be driven on the road safely if the radius of curvature is 100 m.
Answer
1
Shivani Nimbarte
Subject: Physics
, asked on 1/12/15
determine the angular acceleration of a rotating body which slows down from 500 rpm to rest in 10 seconds.
Answer
1
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[** This question has no diagram. So I cannot give any meaningful diagram**]
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[ Answer : 6 : 5 : 3 ]
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[ Answer : [ {root (Mg) } / { 2*pi*root(ml) } ] ]
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[ Answer : 2.2 s , 2.123 N ]
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[ Answer : 0.735 N ; 3.59 s ]
NO LINKS PLEASE
[ Answer : 35.1 rpm, 11.2 N ]
NO LINKS PLEASE