A man stands on a platform that is rotating (without friction)
with an angular speed of...
A man stands on a platform that is rotating (without friction)
with an angular speed of 1.97 rev/s; his arms are outstretched and
he holds a brick in each hand. The rotational inertia of the system
consisting of the man, bricks, and platform about the central axis
is 7.51 kg·m2. If by moving the bricks the man decreases the
rotational inertia of the system to 1.36 kg·m2, (a) what is the
resulting angular speed of the platform and (b) what...
1a )A man with a parcel stands in a lift. If none are moving,
the weights...
1a )A man with a parcel stands in a lift. If none are moving,
the weights are 29.4N, 539N, and 19600N respectively. Find the
magnitude of the tension in the parcel string, the force exerted by
the man on the floor of the lift, and the tension in the lift
cable.
b) The same lift now starts to move due to an increase in the
lift cable's tension to 22226.4N, causing a resultant force of
2000N on the lift and...
From t = 0 to t = 4.11 min, a man stands still, and from t...
From t = 0 to t = 4.11 min, a man stands still, and from t =
4.11 min to t = 8.22 min, he walks briskly in a straight line at a
constant speed of 2.98 m/s. What are (a) his average velocity vavg
and (b) his average acceleration aavg in the time interval 1.00 min
to 5.11 min? What are (c) vavg and (d) aavg in the time interval
2.00 min to 6.11 min?
b. Given the three sets A = {Kim, Tom, John}, B =
{biology-major, arts-major, CS-major}, C...
b. Given the three sets A = {Kim, Tom, John}, B =
{biology-major, arts-major, CS-major}, C = {$40K, $20K, $70k},
{biology-major, arts-major, CS-major}, show that the following
subset is a relation of the Cartesian product A × B × C, and show
the relation in tabular form. (2 points) {(Kim, CS-major, $70K),
(Tom, arts-major, $20K), (John, biology-major, $40K)}
c. For the table derived in problem 6B, give the projections
P({1, 3}) in a tabular form (2 points)
d. Given the...
From t = 0 to t = 3.30 min, a man stands still, and from t...
From t = 0 to t = 3.30 min, a man stands still, and from t =
3.30 min to t = 6.60 min, he walks briskly in a straight line at a
constant speed of 1.39 m/s.
(a) what is his average velocity in the time interval 1.00min to
4.30min?
(b) what is his average acceleration in the time interval
1.00min to 4.30min?
(c) what is his average velocity in the time interval 2.00 min
to 5.30 min?
(d)...