# Question

Another old one: Referring to Fig. 4.29,

(a) How would you pull to get the upper string to break?

(b) How would you pull to get the lower string to break?

(a) How would you pull to get the upper string to break?

(b) How would you pull to get the lower string to break?

## Answer to relevant Questions

A student weighing 600 N crouches on a scale and suddenly springs vertically upward. Will the scale read more or less than 600 N just before the student leaves the scale? A force acts on a 1.5-kg, mass, giving it an acceleration of 3.0 m/s2. (a) If the same force acts on a 2.5-kg mass, what acceleration would be produced? (b) What is the magnitude of the force? A force of 50 N acts on a mass m1, giving it an acceleration of 4.0 m/s2. The same force acts on a mass m2 and produces an acceleration of 12 m/s2. What acceleration will this force produce if the total system is m1 + m2? A force of 10 N acts on two blocks on a frictionless surface (Fig. 4.37). (a) What is the acceleration of the system? (b) What force does block A exert on block B? (c) What force does block B exert on block A? A certain amount of work W is required to accelerate a car from rest to a speed v. If instead an amount of work equal to 2Wis done on the car, what is the car’s speed?Post your question

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