Q: Two identical strings making an angle of θ = 30.0
Two identical strings making an angle of θ = 30.0° with respect to the vertical support a block of mass m = 15.0 kg (Fig. P4.32). What is the tension in each of the strings?...
See AnswerQ: A 75-kg man standing on a scale in an elevator
A 75-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 825 N. What is the acceleration of the elevator?
See AnswerQ: A boat is heading due east at speed v when passengers onboard
A boat is heading due east at speed v when passengers onboard spot a dolphin swimming due north away from them, relative to their moving boat. Which of the following must be true of the dolphin’s moti...
See AnswerQ: A crate of mass m = 32 kg rides on the bed
A crate of mass m = 32 kg rides on the bed of a truck attached by a cord to the back of the cab as in Figure P4.34. The cord can withstand a maximum tension of 68 N before breaking. Neglecting frictio...
See AnswerQ: (a) Find the tension in each cable supporting the 6
(a) Find the tension in each cable supporting the 6.00 x 102-N cat burglar in Figure P4.35. (b) Suppose the horizontal cable were reattached higher up on the wall. Would the tension in the other cable...
See AnswerQ: The distance between two telephone poles is 50.0 m.
The distance between two telephone poles is 50.0 m. When a 1.00-kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. Draw a free-body diagram of the bird. How much tens...
See AnswerQ: (a) An elevator of mass m moving upward has two
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the downward force due to gravity. When the elevator is accelerating upward, which is...
See AnswerQ: A certain orthodontist uses a wire brace to align a patient’s crooked
A certain orthodontist uses a wire brace to align a patient’s crooked tooth as in Figure P4.38. The tension in the wire is adjusted to have a magnitude of 18.0 N. Find the magnitude...
See AnswerQ: A 150-N bird feeder is supported by three cables as
A 150-N bird feeder is supported by three cables as shown in Figure P4.39. Find the tension in each cable. Figure P4.39:
See AnswerQ: One or more external forces are exerted on each object enclosed in
One or more external forces are exerted on each object enclosed in a dashed box shown in Figure 4.2. Identify the reaction to each of these forces. Figure 4.2
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