Question

In: Physics

QUESTION 14 A chimney (length 18 m, mass 980 kg] cracks at the base and topples.  Assume:...

QUESTION 14

  1. A chimney (length 18 m, mass 980 kg] cracks at the base and topples.  Assume:

    - the chimney behaves like a thin rod, and does not break apart as it falls.

    - only gravity (no friction) acts on the chimney as it falls.

    - the bottom of the chimney pivots, but does not move.

    Find the linear speed of the very top of the chimney, in m/s, just as it hits the ground.  

QUESTION 15

  1. A 23 kg cart travels at constant speed, and its four wheels are rolling without slipping. The wheels are disks (radius 0.985 m, mass 4.07 kg), and they turn at constant ω = 14.6 rad/s. Find the total kinetic energy of the cart.

    NOTE: first, you must find the speed of the cart!

Solutions

Expert Solution

genius_generous answered 2 years ago
Next > < Previous

Related Solutions

A chimney (length 17.6 m, mass 823 kg] cracks at the base and topples. Assume: -...
A chimney (length 17.6 m, mass 823 kg] cracks at the base and topples. Assume: - the chimney behaves like a thin rod, and does not break apart as it falls. - only gravity (no friction) acts on the chimney as it falls. - the bottom of the chimney pivots, but does not move. Find the linear speed of the center of mass of the chimney, in m/s, just as it hits the ground Part 2)A chimney (length 11.1 m,...
A chimney (length 10.8 m, mass 588 kg] cracks at the base and topples.  Assume: - the...
A chimney (length 10.8 m, mass 588 kg] cracks at the base and topples.  Assume: - the chimney behaves like a thin rod, and does not break apart as it falls. - only gravity (no friction) acts on the chimney as it falls. - the bottom of the chimney pivots, but does not move. Find the linear speed of the center of mass of the chimney, in m/s, just as it hits the ground A chimney (length 13 m, mass 479...
Please answer both questions 1) A chimney (length 24.2 m, mass 401 kg) cracks at the...
Please answer both questions 1) A chimney (length 24.2 m, mass 401 kg) cracks at the base and topples. Assume: the chimney behaves like a thin rod, and does not break apart as it falls, only gravity (no friction) acts on the chimney as it falls, the bottom of the chimney pivots, but does not move. Find the linear speed of the center of mass of the chimney, in m/s, just as it hits the ground 2)A chimney (length 13...
A ladder of length L = 2.3 m and mass m = 14 kg rests on...
A ladder of length L = 2.3 m and mass m = 14 kg rests on a floor with coefficient of static friction μs = 0.54. Assume the wall is frictionless. A person with mass M = 69 kg now stands at the very top of the ladder. What is the normal force the floor exerts on the ladder? What is the minimum angle to keep the ladder from sliding?
A pendulum has a length 1 m and a mass 1 kg. Assume Earth free fall...
A pendulum has a length 1 m and a mass 1 kg. Assume Earth free fall acceleration equal to 10 m/s^2. When the pendulum oscillates, the maximal deflection angle is +/-1 degree. 1.Suppose the pendulum started losing energy at the rate 1% per period. As a result, the energy of the pendulum drops according to E(t)= E(t=0)*exp(-z*t). Let’s call z damping constant, it has units 1/sec. a) Find Z b) Sketch E(t) for the time span of a few hundred...
A pendulum has a length 1 m and a mass 1 kg. Assume Earth free fall...
A pendulum has a length 1 m and a mass 1 kg. Assume Earth free fall acceleration equal to 10 m/s^2. When the pendulum oscillates, the maximal deflection angle is +/- 1 degree. a) If the maximal deflection angle doubles, what would be the new period? b) If the pendulum mass goes up 100 times, what would be the new period? c) If the length goes up 100 times, what would be the period? d) If the pendulum moves to...
A pendulum has a length 1 m and a mass 1 kg. Assume Earth free fall...
A pendulum has a length 1 m and a mass 1 kg. Assume Earth free fall acceleration equal to 10 m/s^2. When the pendulum oscillates, the maximal deflection angle is +/- 1 degree. a) How long will it take before the energy drops to half of the initial value at t=0? b) How long will it take before the max deflection angle drops to half of the initial value at t=0? c) If the damping was produced by a force...
A bullet of mass m=14 gr is fired into a block of mass M=1 kg initially...
A bullet of mass m=14 gr is fired into a block of mass M=1 kg initially at rest at the edge of a frictionless table of height h=1.10 m. The bullet remains in the block and the block lands a distance d=0.65 m from the bottom of the table. Determine the initial velocity of the bullet. Determine the loss of kinetic Energy during the collision
A ladder of length L = 2.8 m and mass m = 16 kg rests on...
A ladder of length L = 2.8 m and mass m = 16 kg rests on a floor with coefficient of static friction ?s = 0.51. Assume the wall is frictionless. 1) What is the normal force the floor exerts on the ladder? 2) What is the minimum angle the ladder must make with the floor to not slip? 3) A person with mass M = 69 kg now stands at the very top of the ladder. What is the...
A simple pendulum has a mass of 0.550 kg and a length of 2.00 m. It...
A simple pendulum has a mass of 0.550 kg and a length of 2.00 m. It is displaced through an angle of 11.0
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT