An object moving upward cannot be considered free-falling a.Sometimes true b.Always false c.Sometimes fals d.Always true What refers to the force perpendicular to the velocity of an object moving along a curved path?a.Centrifugal force b.Reverse-effective force c. Centripetal force d. Normal force A uniform bar of mass m is supported by a pivot at its top, about which the bar can swing like a pendulum. If a force F is applied perpendicularly to the lower end of the bar as in the diagram, how big must F be in order to hold the bar in equilibrium at an angle θ from the vertical? a.(mg/2) sin (θ)b.(mg/2) cos (θ)c.2mg cos (θ)d.mg sin (θ)e.2mg sin (θ)
An object moving upward cannot be considered free-falling a.Sometimes true b.Always false c.Sometimes fals d.Always true What refers to the force perpendicular to the velocity of an object moving along a curved path?a.Centrifugal force b.Reverse-effective force c. Centripetal force d. Normal force A uniform bar of mass m is supported by a pivot at its top, about which the bar can swing like a pendulum. If a force F is applied perpendicularly to the lower end of the bar as in the diagram, how big must F be in order to hold the bar in equilibrium at an angle θ from the vertical? a.(mg/2) sin (θ)b.(mg/2) cos (θ)c.2mg cos (θ)d.mg sin (θ)e.2mg sin (θ)
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter6: Uniform Circular Motion And Gravitation
Section: Chapter Questions
Problem 23PE: (a) A 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. What...
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- An object moving upward cannot be considered free-falling a.Sometimes true b.Always false c.Sometimes fals d.Always true
- What refers to the force perpendicular to the velocity of an object moving along a curved path?a.Centrifugal force b.Reverse-effective force c.
Centripetal force d. Normal force - A uniform bar of mass m is supported by a pivot at its top, about which the bar can swing like a pendulum. If a force F is applied perpendicularly to the lower end of the bar as in the diagram, how big must F be in order to hold the bar in equilibrium at an angle θ from the vertical? a.(mg/2) sin (θ)b.(mg/2) cos (θ)c.2mg cos (θ)d.mg sin (θ)e.2mg sin (θ)
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