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Samriddhi Dhawan
Subject: Physics
, asked on 9/4/16
Pls explain this question.
Answer
1
Samriddhi Dhawan
Subject: Physics
, asked on 7/4/16
A particle of mass m is projected from horizontal surface with speed u making an angle theta with horizontal. Torque acting on the particle about projection point when it is at highest point is
mu
2
mu
2
sin
2
theta
mu
2
cos
2
theta
mu
2
sin theta cos theta
Answer
1
Samriddhi Dhawan
Subject: Physics
, asked on 7/4/16
A thin rod AB of length l is kept vertical on a horizontal floor such that end A is in contact with floor. If the rod is allowed to fall without slipping at end A, then its angular velocity just before hitting the ground is?
Answer
1
Samriddhi Dhawan
Subject: Physics
, asked on 7/4/16
A solid cylinder rolls down a rough inclined plane without slipping. As it goes down, what will happen to force of friction?
decreases its mechanical energy
increases its translational kinetic energy
increases its rotational kinetic energy
decreases its potential energy
Answer
2
Studious
Subject: Physics
, asked on 6/4/16
plz explain the bicycle rim experiment [in blue box] on pg156 physics ncert class xi part 1.
Answer
1
Aparna Truson
Subject: Physics
, asked on 27/2/16
work energy theorem in rotational motion
Answer
1
Anubhuti William
Subject: Physics
, asked on 13/2/16
state the no of degrees of freedom posessedby a monoatomic molecule in space.also give expression for total energy posessed by it
1.at a given temperature
2.calculate total energy of atom at 300 k
Answer
1
Hardee Shah
Subject: Physics
, asked on 6/2/16
A bucket of mass 8kg is supported by a light rope wound around a solid wooden cylinder of mass 12kg and radius 20cm free to rotate about its axis. A man holding the free end of the rope,let's go the bucket freely downward in a well 50m deep. Neglecting friction, obtain the speed of bucket and the angular speed of the cylinder just before the bucket enters water.
Answer
1
Jay Bhamare
Subject: Physics
, asked on 3/2/16
Find the position of CM of a uniform disc of radius R from which a hole of radius r is cut out. The centre of hole is at a distance R/2 from the centre of the disc.
Answer
2
Hardee Shah
Subject: Physics
, asked on 21/1/16
A flywheel of mass 500kg and diameter 1m revolves about its axle. Its frequency of revolution is increased by 18 in 5sec. Calculate the torque applied.
Answer
2
Hardee Shah
Subject: Physics
, asked on 21/1/16
A small block is rotating in a horizontal circle at the end of a thread which passes down through a hole at the centre of table top. If the system is rotating at 2.5rev/s in a circle of 30cm. radius, what will be the speed of rotation when the thread is pulled inwards to decrease the radius to 10cm?Neglect friction.
Answer
1
Hardee Shah
Subject: Physics
, asked on 21/1/16
A disc of mass 0.1kg and radius one decimeter has a little projection of negligible mass on its circumference. A 10g bit of putty moving with a velocity of 500cm/s strikes this projection and stick fast. Find the angular velocity of the disc.
Answer
1
Hardee Shah
Subject: Physics
, asked on 18/1/16
A flywheel of mass 500kg and diameter 1m revolves about its axle. Its frequency of revolution is increased by 18 in 5secs. Calculate the torque applied.
Answer
1
Hardee Shah
Subject: Physics
, asked on 18/1/16
A disc of mass 0.1kg and radius one decimeter has a little projection of negligible mass on its circumference. A 10g bit of putty moving with a velocity of 500cm/s strikes this projection and stcks fast. Find the angular velocity of the disc.
Answer
1
Hardee Shah
Subject: Physics
, asked on 18/1/16
A small block is rotating in a horizontal circle at the end of a thread which passes down through a hole at the centre of a table top. If the system is rotating at 2.5rev/s in a circle of 30cm. radius, what will be the speed of rotation when thread is pulled inwards to decrease the radious to 10cm. Neglect friction
Answer
1
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Pls explain this question.
1.at a given temperature
2.calculate total energy of atom at 300 k