Questions from College Physics

Q: A bicyclist starting at rest produces a constant angular acceleration of 1

A bicyclist starting at rest produces a constant angular acceleration of 1.60 rad/s2 for wheels that are 38.0 cm in radius. (a) What is the bicycle’s linear acceleration? (b) What is the angular speed...

Q: Describe the path of a moving object in the event that the

Describe the path of a moving object in the event that the object’s acceleration is constant in magnitude at all times and (a) Perpendicular to its velocity; (b) Parallel to its velocity.

Q: The diameters of the main rotor and tail rotor of a singleengine

The diameters of the main rotor and tail rotor of a singleengine helicopter are 7.60 m and 1.02 m, respectively. The respective rotational speeds are 450 rev/min and 4138 rev/ min. Calculate the speed...

Q: When the merry-go-round of Quick Quiz 7.

When the merry-go-round of Quick Quiz 7.4 is rotating at a constant angular speed, Andrea’s tangential speed is (a) Twice Chuck’s (b) The same as Chuck’s (c) Half of Chuck’s (d) Impossible to determin...

Q: A car of mass m follows a truck of mass 2m around

A car of mass m follows a truck of mass 2m around a circular turn. Both vehicles move at speed v. (a) What is the ratio of the truck’s net centripetal force to the car’s net centripetal force? (b) At...

Q: A car initially traveling at 29.0 m/s undergoes

A car initially traveling at 29.0 m/s undergoes a constant negative acceleration of magnitude 1.75 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes...

Q: A child is practicing for a BMX race. His speed remains

A child is practicing for a BMX race. His speed remains constant as he goes counterclockwise around a level track with two nearly straight sections and two nearly semicircular sections, as shown in th...

Q: A rotating wheel requires 3.00 s to rotate 37.

A rotating wheel requires 3.00 s to rotate 37.0 revolutions. Its angular velocity at the end of the 3.00-s interval is 98.0 rad/s. What is the constant angular acceleration (in rad/s2) of the wheel?...

Q: An electric motor rotating a workshop grinding wheel at a rate of

An electric motor rotating a workshop grinding wheel at a rate of 1.00 x 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.00 rad/s2. (a) How lo...

Q: A car initially traveling eastward turns north by traveling in a circular

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as shown in Figure P7.15. The length of the arc ABC is 235 m, and the car completes the turn in 36.0 s....