Q: A uniform, 8.0-m, 1150-kg
A uniform, 8.0-m, 1150-kg beam is hinged to a wall and supported by a thin cable attached 2.0 m from the free end of the beam (Fig. P11.46). The beam is supported at an angle of 30.0° above...
See AnswerQ: Suppose you could use wheels of any type in the design of
Suppose you could use wheels of any type in the design of a soapbox-derby racer (an unpowered, four-wheel vehicle that coasts from rest down a hill). To conform to the rules on the total weight of the...
See AnswerQ: Why is a tapered water glass with a narrow base easier to
Why is a tapered water glass with a narrow base easier to tip over than a glass with straight sides? Does it matter whether the glass is full or empty?
See AnswerQ: A uniform, 255-N rod that is 2.00
A uniform, 255-N rod that is 2.00 m long carries a 225-N weight at its right end and an unknown weight W toward the left end (Fig. P11.47). When W is placed 50.0 cm from the left end of the rod, the s...
See AnswerQ: A claw hammer is used to pull a nail out of a
A claw hammer is used to pull a nail out of a board (Fig. P11.48). The nail is at an angle of 60° to the board, and a force F S 1 of magnitude 400 N applied to the nail is required to pull it from the...
See AnswerQ: You open a restaurant and hope to entice customers by hanging out
You open a restaurant and hope to entice customers by hanging out a sign (Fig. P11.49). The uniform horizontal beam supporting the sign is 1.50 m long, has a mass of 16.0 kg, and is hinged to the wall...
See AnswerQ: End A of the bar AB in Fig. P11.50
End A of the bar AB in Fig. P11.50 rests on a frictionless horizontal surface, and end B is hinged. A horizontal force
See AnswerQ: A therapist tells a 74-kg patient with a broken leg
A therapist tells a 74-kg patient with a broken leg that he must have his leg in a cast suspended horizontally. For minimum discomfort, the leg should be supported by a vertical strap attached at the...
See AnswerQ: A loaded cement mixer drives onto an old drawbridge, where it
A loaded cement mixer drives onto an old drawbridge, where it stalls with its center of gravity three-quarters of the way across the span. The truck driver radios for help, sets the handbrake, and wai...
See AnswerQ: In a simplified version of the musculature action in leg raises,
In a simplified version of the musculature action in leg raises, the abdominal muscles pull on the femur (thigh bone) to raise the leg by pivoting it about one end (Fig. P11.53). When you are lying ho...
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