Q: A stone with mass 0.80 kg is attached to one
A stone with mass 0.80 kg is attached to one end of a string 0.90 m long. The string will break if its tension exceeds 60.0 N. The stone is whirled in a horizontal circle on a frictionless tabletop; t...
See AnswerQ: A 52-kg ice skater spins about a vertical axis through
A 52-kg ice skater spins about a vertical axis through her body with her arms horizontally outstretched; she makes 2.0 turns each second. The distance from one hand to the other is 1.50 m. Biometric m...
See AnswerQ: A small remote-controlled car with mass 1.60 kg
A small remote-controlled car with mass 1.60 kg moves at a constant speed of v = 12.0 m/s in a track formed by a vertical circle inside a hollow metal cylinder that has a radius of 5.00 m (Fig. E5.45)...
See AnswerQ: A small car with mass 0.800 kg travels at constant
A small car with mass 0.800 kg travels at constant speed on the inside of a track that is a vertical circle with radius 5.00 m (Fig. E5.45). If the normal force exerted by the track on the car when it...
See AnswerQ: A 50.0-kg stunt pilot who has been diving
A 50.0-kg stunt pilot who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane. (a) If the plane’s speed at the lowest point of the circ...
See AnswerQ: A ball is dropped from rest and feels air resistance as it
A ball is dropped from rest and feels air resistance as it falls. Which of the graphs in Fig. Q5.25 best represents its acceleration as a function of time? Fig. Q5.25:
See AnswerQ: On a farm, you are pushing on a stubborn pig with
On a farm, you are pushing on a stubborn pig with a constant horizontal force with magnitude 30.0 N and direction 37.0° counterclockwise from the +x-axis. How much work does this force do during a dis...
See AnswerQ: A car is traveling on a level road with speed v0 at
A car is traveling on a level road with speed v0 at the instant when the brakes lock, so that the tires slide rather than roll. (a) Use the work–energy theorem to calculate the minimum stopping distan...
See AnswerQ: A 30.0-kg crate is initially moving with a
A 30.0-kg crate is initially moving with a velocity that has magnitude 3.90 m/s in a direction 37.0o west of north. How much work must be done on the crate to change its velocity to 5.62 m/s in a dire...
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