Jane says that the magnitude of the torque exerted by a force of magnitude F is equal to the perpendicular distance from the axis of rotation r multiplied by F, while Jason insists that it is equal to the distance from the axis of rotation r
multiplied by the magnitude of the perpendicular component of the force, F Who is right?
They are both right. Both answers are equivalent to τ = F r sinθ, where θ is the angle between the force and the radial line.
You might also like to view...
Charge in an Electric Field: What is the magnitude of a the vertical electric field that will balance the weight of a plastic sphere of mass 2.1 g that has been charged to -3.0 nC? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 6.9 × 106 N/C B. 7.8 × 105 N/C C. 1.5 × 106 N/C D. 2.1 × 106 N/C
cable and frictionless pulley system at D is used to bring a 230-kg pole (ACB) to a vertical position as shown in the figure. The cable has tensile force T and is attached at C. The reaction force components, Ax and Ay, at A (in newtons) are:
(A) 3102, 21270
(B) 21270, 3102
(C) 21342, 4214
(D) 23102, 4204
Metals are shiny because
A) they reflect 100% of incident light. B) they are poor absorbers of light. C) their electrons vibrate to the oscillations of any incident light. D) none of the above
A bullet is fired with a certain velocity at an angle ? above the horizontal at a location where g = 10.0 m/s2. The initial x and y components of its velocity are 86.6 m/s and 50.0 m/s respectively
How long does it take before the bullet gets to the highest point of its trajectory? A) 5.0 seconds B) 10.0 seconds C) 15.0 seconds D) 20.0 seconds E) None of the other choices is correct.