Question

A rotating cylindrical rod of mass m=4 Kg and length l=1 meter is connected to a falling weight of 300 grams with a 2 meters string (Maximum distance covered by the falling weight). The distance from the wound string to the axis of rotation is 300 mm. The time taken by the falling weight to halfway is 2 seconds and to the bottom is 2.7 seconds.

*Change of angular momentum in the spinning rod*

Mass (Kg) |
Moment of Inertial of Rod I (Kg.m |
Angular Momentum at halfway (Kg. m |
Angular Momentum at bottom (Kg. m |
Difference (Kg. m |

0.3 |

Calculate the angular momentum of the rod at both the points (halfway and bottom).

Answer #1

A rotating cylindrical rod of mass m=4 Kg and length l=1 meter
is connected to a falling weight of 300 grams with a 2 meters
string (Maximum distance covered by the falling weight). The
distance from the wound string to the axis of rotation is 300 mm.
The time taken by the falling weight to halfway is 2 seconds and to
the bottom is 2.7 seconds.
If we replace the 300-gram falling weight with the 2 Kg weight,
it takes...

A rotating cylindrical rod of mass m=4 Kg and length l=1 meter
is connected to a falling weight of 300 grams with a 2 meters
string (Maximum distance covered by the falling weight). The
distance from the wound string to the axis of rotation is 300 mm.
The time taken by the falling weight to halfway is 2 seconds and to
the bottom is 3.7 seconds.
!!!! If we replace the 300-gram falling weight with the 2 Kg
weight, it...

A thin uniform rod has a length of 0.490 m and is rotating in a
circle on a frictionless table. The axis of rotation is
perpendicular to the length of the rod at one end and is
stationary. The rod has an angular velocity of 0.37 rad/s and a
moment of inertia about the axis of 3.50×10−3 kg⋅m2 . A
bug initially standing on the rod at the axis of rotation decides
to crawl out to the other end of...

A thin uniform rod has a length of 0.430 m and is rotating in a
circle on a frictionless table. The axis of rotation is
perpendicular to the length of the rod at one end and is
stationary. The rod has an angular velocity of 0.32 rad/s and a
moment of inertia about the axis of 3.20×10−3 kg⋅m2 . A bug
initially standing on the rod at the axis of rotation decides to
crawl out to the other end of...

A cylindrical rod of length 2.0 m, radius 0.5 m, and mass 1.5 kg
has two spheres attached on its ends. The centers of the spheres
are 1.0 m from the center of the rod. The mass of each sphere is
0.66 kg. The rod is capable of rotating about an axis passing
through its center and perpendicular to the plane of the page, but
the set up is stationary to begin with. A small mass of value 0.19
kgmoving...

Uniform rod with length 6.6 m and mass 9.2 kg is rotating about
an axis passing distance 4 m from one of its ends. The moment of
inertia of the rod about this axis (in kg m2) is

A propeller consists of two blades each 3.6 m in length and mass
108 kg each. The propeller can be approximated by a single rod
rotating about its center of mass. The propeller starts from rest
and rotates up to 1,210 rpm in 30 seconds at a constant rate.
(Enter the magnitudes.) What is the angular momentum (in kg ·
m2/s) of the propeller at t = 10 s?

8%)
Problem 15: A rod of mass M =
3.5 kg and length L can rotate about a hinge at its left
end and is initially at rest. A putty ball of mass m = 55
g, moving with speed v = 6.68 m/s, strikes the rod at
angle θ = 59° from the normal at a distance D =
2/3 L, where L = 1.25 m, from the point of
rotation and sticks to the rod after the collision....

A thin, cylindrical rod ℓ = 27.0 cm long with a mass m = 1.20 kg
has a ball of diameter d = 10.00 cm and mass M = 2.00 kg attached
to one end. The arrangement is originally vertical and stationary,
with the ball at the top as shown in the figure below. The
combination is free to pivot about the bottom end of the rod after
being given a slight nudge.
(a) After the combination rotates through 90...

A small object with a mass of 1.62 kg is moving with a speed of
290 m/s (with respect to the ground) when it collides with a rod
with a mass of 11.99 kg and a length of L m. The rod is
initially at rest, in a vertical position, and pivots about an axis
going through its center of mass which is located exactly halfway
along the rod. The object imbeds itself in the rod at a distance
L/4...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 3 minutes ago

asked 9 minutes ago

asked 10 minutes ago

asked 12 minutes ago

asked 14 minutes ago

asked 15 minutes ago

asked 17 minutes ago

asked 22 minutes ago

asked 25 minutes ago

asked 25 minutes ago

asked 27 minutes ago