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A worker wants to turn over a uniform, 1250-N, rectangular crate by pulling at 53.0° on one of its vertical sides (Fig. P11.69). The floor is rough enough to prevent the crate from slipping. A) What pull is needed to just start the crate to tip? B) How hard does the floor push upward on the crate? C) Find the friction force on the crate. D) What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? Pul

A worker wants to turn over a uniform, 1250-N, rectangular crate by pulling at 53.0° on one of its vertical sides (Fig. P11.69). The floor is rough enough to prevent the crate from slipping. A) What pull is needed to just start the crate to tip? B) How hard does the floor push upward on the crate? C) Find the friction force on the crate. D) What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? Pul

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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and a total mass of 120 kg. The turntable is initially rotating at 3.00 rad/s about a vertical axis through its center. Suddenly, a 70.0-kg parachutist makes a soft landing on the turntable at a point near the outer edge. A) Find the angular speed of the turntable after the parachutist lands. (Assume that you can treat the parachutist as a particle.) B) Compute the kinetic energy of the system before and after the parachutist lands. Why are these kinetic energies not equal? 5. A worker wants to turn over a uniform, 1250-N, rectangular crate by pulling at 53.0° on one of its vertical sides (Fig. P11.69). The floor is rough enough to prevent the crate from slipping. A) What pull is needed to just start the crate to tip? B) How hard does the floor push upward on the crate? C) Find the friction force on the crate. D) What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? Pull Q Search 53.0⁰ 30 2.20 m Figure 3 6. A 10.0-kg mass is traveling to the right with a speed of 2.00 m/s on a frictionless horizontal surface when it collides with and sticks to a second 10.0-kg mass that is initially at rest but is attached to a light spring that is neither stretched nor compressed with a force constant 80.0 N/m. The system undergoes SHM. A) Find the frequency, amplitude, the period of the subsequent oscillations and the phase angle. B) Find the maximum and minimum velocities and acceleration attained by the oscillating system C) How long does it take the system to return the first time to the position it had immediately after the collision? D) Write the equations for the displacement, velocity, and acceleration of the system as function of time. 1.50 m 7. In March 2006, two small satellites were discovered orbiting Pluto, one at a distance of 48,000 km and the other at 64,000 km. Pluto already was known to have a large satellite Charon, orbiting at 19,600 km with an orbital period of 6.39 days. Assuming that the satellites do not affect each other, find the orbital periods of the two small satellites without the mass of Pluto. ENG
Transcribed Image Text:and a total mass of 120 kg. The turntable is initially rotating at 3.00 rad/s about a vertical axis through its center. Suddenly, a 70.0-kg parachutist makes a soft landing on the turntable at a point near the outer edge. A) Find the angular speed of the turntable after the parachutist lands. (Assume that you can treat the parachutist as a particle.) B) Compute the kinetic energy of the system before and after the parachutist lands. Why are these kinetic energies not equal? 5. A worker wants to turn over a uniform, 1250-N, rectangular crate by pulling at 53.0° on one of its vertical sides (Fig. P11.69). The floor is rough enough to prevent the crate from slipping. A) What pull is needed to just start the crate to tip? B) How hard does the floor push upward on the crate? C) Find the friction force on the crate. D) What is the minimum coefficient of static friction needed to prevent the crate from slipping on the floor? Pull Q Search 53.0⁰ 30 2.20 m Figure 3 6. A 10.0-kg mass is traveling to the right with a speed of 2.00 m/s on a frictionless horizontal surface when it collides with and sticks to a second 10.0-kg mass that is initially at rest but is attached to a light spring that is neither stretched nor compressed with a force constant 80.0 N/m. The system undergoes SHM. A) Find the frequency, amplitude, the period of the subsequent oscillations and the phase angle. B) Find the maximum and minimum velocities and acceleration attained by the oscillating system C) How long does it take the system to return the first time to the position it had immediately after the collision? D) Write the equations for the displacement, velocity, and acceleration of the system as function of time. 1.50 m 7. In March 2006, two small satellites were discovered orbiting Pluto, one at a distance of 48,000 km and the other at 64,000 km. Pluto already was known to have a large satellite Charon, orbiting at 19,600 km with an orbital period of 6.39 days. Assuming that the satellites do not affect each other, find the orbital periods of the two small satellites without the mass of Pluto. ENG
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