Amass m = 4.7 kg hangs on the end of a massless rope l = 2.05 m long. the
pendulum is held horizontal and released from rest.
1) how fast is the mass moving at the bottom of its path?
2) what is the magnitude of the tension in the string at the bottom of the
path?
3) if the maximum tension the string can take without breaking is tmax =
382 n, what is the maximum mass that can be used? (assuming that the
mass is still released from the horizontal and swings down to its lowest
point.)
4) now a peg is placed 4/5 of the way down the pendulum’s path so that when
the mass falls to its vertical position it hits and wraps around the peg. as
it wraps around the peg and attains its maximum height it ends a distance
of 3/5 l below its starting point (or 2/5 l from its lowest point). how fast
is the mass moving at the top of its new path (directly above the peg)?

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

The force will determine the acceleration.

1134567 a jet with mass m = 1.1 ă— 105 kg jet accelerates down the runway for takeoff at 2 m/s2. 1) what is the net horizontal force on the airplane as it accelerates for takeoff? 2.2*10^5 n your submissions: 2.2*10^5 computed value: 220000submitted: saturday, january 26 at 2: 41 pm feedback: correct! 2) what is the net vertical force on the airplane as it accelerates for takeoff? 0 n your submissions: 0 computed value: 0submitted: saturday, january 26 at 2: 41 pm feedback: correct! 3) once off the ground, the plane climbs upward for 20 seconds. during this time, the vertical speed increases from zero to 21 m/s, while the horizontal speed increases from 80 m/s to 95 m/s. what is the net horizontal force on the airplane as it climbs upward? n 4) what is the net vertical force on the airplane as it climbs upward? n 5) after reaching cruising altitude, the plane levels off, keeping the horizontal speed constant, but smoothly reducing the vertical speed to zero, in 13 seconds. what is the net horizontal force on the airplane as it levels off? n 6) what is the net vertical force on the airplane as it levels off?