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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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A diameter, tall, hollow cylinder is placed on top of a -diameter, -tall, cylinder of solid aluminum, then the two are sent sliding across frictionless ice. The static and kinetic coefficients of friction between the cylinders are and , respectively. Air resistance cannot be neglected. What is the maximum speed the cylinders can have without the top cylinder sliding off?
A 50-cm-diameter, 400 g beach ball is dropped with a 4.0 mg ant riding on the top. The ball experiences air resistance, but the ant does not. What is the magnitude of the normal force exerted on the ant when the ball鈥檚 speed is 2.0 m/s?
A tightrope walker stands at the center of a rope. The rope supports are apart and the rope sags at each end. The tightrope walker crouches down, then leaps straight up with an acceleration of to catch a passing trapeze. What is the tension in the rope as he jumps?
A small car is pushing a large truck. They are speeding up. Is the force of the truck on the car larger than, smaller than, or equal to the force of the car on the truck?
A meteorite falls toward the earth. What is the magnitude of the earth鈥檚 acceleration just before impact? The earth鈥檚 mass is.
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