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Chapter 7: Q. 34 (page 179)
The two blocks in FIGUREare sliding down the incline. What is the tension in the massless string?
Tension in the massless string is.
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Block in is heavier than block and is sliding down the incline. All surfaces have friction. The rope is massless, and the massless pulley turns on frictionless bearings. The rope and the pulley are among the interacting objects, but you鈥檒l have to decide if they鈥檙e part of the system.
A helicopter is flying horizontally. A crate is suspended from the helicopter by a massless cable that is constantly from vertical. What propulsion force F u prop is being provided by the helicopter鈥檚 rotor? Air resistance can be ignored. Give your answer in component form in a coordinate system where points in the direction of motion and points upward.
Block B in the figure rests on a surface for which the static and kinetic coefficients of friction are and respectively. The ropes are massless.
What is the maximum mass of block A for which the system remains in equilibrium?
a. How much force does an astronaut exert on his chair while sitting at rest on the launch pad?
b. How much force does the astronaut exert on his chair while accelerating straight up at
The physics book in FIGURE Pis connected by a string to a coffee cup. The book is given a push up the slope and released with a speed of . The coefficients of friction are and
a. How far does the book slide?
b. At the highest point, does the book stick to the slope, or does it slide back down?
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