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Ms Eccentric
Subject: Physics
, asked on 19/5/18
ABCD is a parallelogram. Show that
$2\overrightarrow{\mathrm{DC}}-\overrightarrow{\mathrm{DB}}=\overrightarrow{\mathrm{AC}}$
Answer
2
Om Prasad
Subject: Physics
, asked on 12/5/18
Please set this as priority
Please solve this question as fast as possible..
Thanks in advance
Q. For the given of pulleys and masses, assuming the pulleys to be massless and the strings to be inextensible, calculate the tensions in the strings and the accelerations of the blocks.
Answer
1
Arshak Shan
Subject: Physics
, asked on 3/5/18
A ball is tied to a string that passes through a glass tube and is attached to a hanging mass.The tube is held vertically as the ball is swung in a horizontal circle at a radius r and at a speed of v.if the radius become 2r the speed of the ball become?
Answer
1
Arshak Shan
Subject: Physics
, asked on 3/5/18
A square thin plate with the side length 2m and uniform density is lying flat on a table.A force F with a magnitude of 10N is applied at one of the corners as shown above.What is the torque produced by the force F relative to the centre of the square?
Answer
1
Arshak Shan
Subject: Physics
, asked on 3/5/18
A meter bridge of negligible mass is hung from a rope attached to its centre and a 4kg mass is hung from one end of the meter stick and another mass M is hung at a distance of 0.4m from the centre of the meter stick as shown above what is the value of M?
Answer
1
Arshak Shan
Subject: Physics
, asked on 2/5/18
a car skids a distance of 50m on a dry road. what is the velocity of the car when the skid begins if the coefficient of friction between the tires and the road is 0.4??
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 2/5/18
Explain qno.28
Q.28. A uniform rod of mass M pulled by force F on smooth surface. The value of tension T in the rod varies with the distance X from the force end is according to the graph
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 2/5/18
A man of mass
m
is standing on a board on ground and pulling the board of mass
m
up with force
F
by
the pulley system as shown in figure. Normal reaction between man and board is
(1)
mg – F
(2)
mg + F
(3) (
m + M
)
g
+
F
(4) (
m
–
M
)
g
–
F
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 2/5/18
Explain qno.16. Ans(2):
16. A block A of mass m and a pan P of equal mass are connected by a string passing over a smooth light pulley Initially the system is at rest. A particle of mass m falls freely from height h on the pan and sticks to it. The speed with which A moves just after the collision is. .
$\left(1\right)\frac{\sqrt{\mathrm{gh}}}{3}\left(2\right)\frac{\sqrt{2\mathrm{gh}}}{3}\phantom{\rule{0ex}{0ex}}\left(3\right)\frac{2\sqrt{\mathrm{gh}}}{3}\left(4\right)\frac{4\sqrt{\mathrm{gh}}}{3}$
Answer
1
Arshak Shan
Subject: Physics
, asked on 1/5/18
A force of 40N is applied to a 98N object that is at rest. A frictional force of 20N must be overcome to move the object . What is the acceleratipn of the object
Answer
1
Arshak Shan
Subject: Physics
, asked on 1/5/18
a 40 kg child sits on the edge of a carnival ride at a radius of 1m. the ride makes 2 revolutions in 6s. the force that is holding the child on the ride ia mostly nearly
Answer
1
ðŸ˜Žutkarsh Shukla
Subject: Physics
, asked on 26/4/18
a stone is dropped into a 45 m deep well the sound of splash is heard 3.13 second after the stone dropped the speed of sound in air will be
Answer
1
Priyanshi
Subject: Physics
, asked on 22/4/18
A sphere of mass m moving with velocity v strikes elastically with a wall moving towards the sphere with a velocity u. If the mass of the wall is infinitely large, the work done by the wall during collision will be
(A) mu(u+v) (B) 2mu(u+v) (C) 2mu(u+v) (D) 2m(u+v)
Answer
1
R J
Subject: Physics
, asked on 15/4/18
3.pls answer fast
â€‹Q3.
$\mathrm{\alpha}=\frac{\mathrm{F}}{{\mathrm{v}}^{2}}\mathrm{sin}\left(\mathrm{\beta t}\right)$
here v = velocity , F = force, t = time find the dimensions of
$\mathrm{\alpha}\mathrm{and}\mathrm{\beta}$
.
Answer
1
Amitesh Kumar
Subject: Physics
, asked on 14/4/18
Q. Three forces
$\overline{){F}_{1}},\overline{){F}_{2}}and\overline{){F}_{3}}\phantom{\rule{0ex}{0ex}}$
act on a body in equilibrium. There is no other force on the body. If
F
_{1}
is removed , the acceleration of the body is
a.
The acceleration of the body if
F
_{2}
is removed is:
(1)
$\frac{\left|\overline{){F}_{1}}\right|}{\left|\overline{){F}_{2}}\right|}a$
(2)
$\frac{\left|\overline{){F}_{2}}\right|}{\left|\overline{){F}_{1}}\right|}a$
(3)
$\frac{\left|\overline{){F}_{2}}\right|+\left|\overline{){F}_{3}}\right|}{\left|\overline{){F}_{1}}\right|+\left|\overline{){F}_{3}}\right|}a$
(4)
$\frac{\left|\overline{){F}_{1}}\right|+\left|\overline{){F}_{3}}\right|}{\left|\overline{){F}_{2}}\right|+\left|\overline{){F}_{3}}\right|}a$
Answer
1
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Please solve this question as fast as possible..

Thanks in advance

Q. For the given of pulleys and masses, assuming the pulleys to be massless and the strings to be inextensible, calculate the tensions in the strings and the accelerations of the blocks.

mis standing on a board on ground and pulling the board of massmup with forceFbythe pulley system as shown in figure. Normal reaction between man and board is

(1)

mg – F(2)mg + F(3) (m + M)g+F(4) (m–M)g–F16. A block A of mass m and a pan P of equal mass are connected by a string passing over a smooth light pulley Initially the system is at rest. A particle of mass m falls freely from height h on the pan and sticks to it. The speed with which A moves just after the collision is. .

$\left(1\right)\frac{\sqrt{\mathrm{gh}}}{3}\left(2\right)\frac{\sqrt{2\mathrm{gh}}}{3}\phantom{\rule{0ex}{0ex}}\left(3\right)\frac{2\sqrt{\mathrm{gh}}}{3}\left(4\right)\frac{4\sqrt{\mathrm{gh}}}{3}$

(A) mu(u+v) (B) 2mu(u+v) (C) 2mu(u+v) (D) 2m(u+v)

â€‹Q3. $\mathrm{\alpha}=\frac{\mathrm{F}}{{\mathrm{v}}^{2}}\mathrm{sin}\left(\mathrm{\beta t}\right)$ here v = velocity , F = force, t = time find the dimensions of $\mathrm{\alpha}\mathrm{and}\mathrm{\beta}$.

Fis removed , the acceleration of the body is_{1}a.The acceleration of the body ifFis removed is:_{2}(1) $\frac{\left|\overline{){F}_{1}}\right|}{\left|\overline{){F}_{2}}\right|}a$ (2) $\frac{\left|\overline{){F}_{2}}\right|}{\left|\overline{){F}_{1}}\right|}a$

(3) $\frac{\left|\overline{){F}_{2}}\right|+\left|\overline{){F}_{3}}\right|}{\left|\overline{){F}_{1}}\right|+\left|\overline{){F}_{3}}\right|}a$ (4) $\frac{\left|\overline{){F}_{1}}\right|+\left|\overline{){F}_{3}}\right|}{\left|\overline{){F}_{2}}\right|+\left|\overline{){F}_{3}}\right|}a$