A small block on a frictionless, horizontal surface has a mass of 2.60×10−2 kg . It is attached to a massless cord passing through a hole in the surface (the figure (Figure 1)). The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of 1.65 rad/s . The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.150 m. Model the block as a particle.
a) What is the new angular speed?
b)Find the change in kinetic energy of the block.
c)How much work was done in pulling the cord?
A small block on a frictionless, horizontal surface has a mass of 2.60×10−2 kg . It...
A small block on a frictionless
horizontal surface has a mass of 2.50×10−2 . It is attached to a
massless cord passing through a hole in the surface. (See the
figure below .) The block is originally revolving at a distance of
0.300 from the hole with an angular speed of 1.75 . The cord is
then pulled from below, shortening the radius of the circle in
which the block revolves to 0.150 . You may treat the block as...
A small block on a frictionless, horizontal surface has a mass of 2.40x10-2 kg . It is attached to a massless cord passing through a hole in the surface (Figure 1). The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of 2.39 rad/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.150 m. Model the block as a particle. Figure...
A small block on a frictionless, horizontal surface has a mass
of 0.0260 kg. It is attached to a massless cord passing through a hole in the
surface (see figure below). The block is originally revolving at a
distance of 0.320 m from the hole with an angular speed of 1.90rad/s.
The cord is then pulled from below, shortening the radius of the
circle in which the block revolves to 0.160 m. Model the block as a particle.(a) Is angular...
A small block on a frictionless horizontal surface has a mass of 2.50×10^-2kg . It is attached to a massless cord passing through a hole in the surface.The block is originally revolving at a distance of 0.300m from the hole with an angular speed of 1.75 rad/s . The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.150m . You may treat the block as a particle. How much work...
A small block on a frictionless horizontal surface has a mass of
0.0280 kg . It is attached to a massless cord passing through a
hole in the surface. (See the figure below (Figure 1) .) The block
is originally revolving at a distance of 0.310 m from the hole with
an angular speed of 1.80 rad/s . The cord is then pulled from
below, shortening the radius of the circle in which the block
revolves to 0.115 m ....
constants Submit Previous Answers A small block on a frictionless, horizontal surface has a mass of 2.90*10-2 kg. It is attached to a massless cord passing through a hole in the surface (Figure 1). The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of 2.25 rad/s. The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.150 m. Model the block as...
6. A small block on a frictionless, horizontal surface has a mass "m". It is attached to a massless cord passing through a hole in the surface. The block is originally revolving at a distance "r" with an angular speed "o". The cord is pulled below, shortening the radius to half it value. Given [r, m, ω.], Determine: a. The final angular speed. b. The amount of work done in pulling the cord.
A small block with a mass of 0.0600 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (Figure 1). The block is originally revolving at a distance of 0.49 m from the hole with a speed of 0.77 m/s . The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 9.0×10−2 m . At this new distance, the speed of the block is 4.19 m/s...
A small block with mass m is attached to a cord passing through
a hole in a frictionless, horizontal surface. The block is
initially revolving at a distance r from the hole with a speed vr.
as shown. (a) By what force F, applied by the hand is the block
held rotating? The cord is then pulled additionally from below,
shortening the radius of the circle in which the block revolves to
At this new distance, (b) what will the...
A puck on a frictionless air-hockey table has a mass of 0.0500kg and is attached to a cord passing downward through a hole in the table. The puck is originally revolving at a distance of 0.300m from the hole with an angular speed of 2.50 rad/s. the cord is then pulled from below l, shortening the puck' s radius to 0.100m. what is the buck's new angular speed?