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Classical Dynamics of Particles and Systems
- This question is about one of Descarte's machines and showing that it draws a parabola. See attached. Thank youarrow_forwardFind the force law of a particle in the central force field that allows the particle to move in an orbit of radius r = 4e¯ where a is a constant. 1 (a) Attractive and proportional to 1 (b) Repulsive and proportional to (c) Attractive and proportional to 1 (d) Repulsive and proportional toarrow_forwardA metal wire is bent to the shape of a circular arc as shown in the figure. The arc is centered around the origin. Please, notice that the arc goes through grid intersection points. y (cm) 8 7 6 5 43 210123456 -5 -6 -7 -8 HH || -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 x (cm) The wire has a constant linear charge density of 1.33 nC/cm. What is the total electric charge of the wire? Submit Answer Tries 0/12 What is the x-component of the electric field at the origin due to the charged wire? Submit Answer Tries 0/12 What is the y-component of the electric field at the origin? Submit Answer Tries 0/12arrow_forward
- A point particle moves with uniform angular velocity on a circular path A5] centred on the origin, and is acted on by the field: r dr F(r) = -K- dt in which k and b are positive constants, r is the position vector of the particle (with magnitude r) and t is a parameter. x = a cos t, y = a sin t, (0 < t < 27), find an expression for the field in terms of t and determine the work done during a single circuit of the particle. Hence state a condition for F(r) to be conservative. Using the standard parameterisation,arrow_forwardThere are 2 thin uniform rods. Rod DC is pinned at its center of gravity (free to rotate 360 degrees), 6 FT long, and perfectly horizontal. Rod AB is perfectly vertical, pinned at the bottom of the rod and 6 FT long as well. Both pins are on the ground (So they form a perfectly horizontal line if you connect them). The pines are 9 FT away from each other. Rod AB is released from rest and hits the end of DC with a coefficient of restitution of 0.6 . DETERMINE THE ANGULAR VELOCITY OF BOTH RODS JUST AFTER IMPACT ASSUMING BOTH WEIGH 20 LBS EACH.arrow_forwardI want part (a) and ( b) ans.arrow_forward
- A metal bar is in the xy-plane with one end of the bar at the origin. A force ? =(7.00 N)?+(3.00 N)? is applied to the bar at the point x = 3.00m, y = 4.00m. (a) In terms of unit vectors ? and ?, what is the position vector ?⃗ for the point where the force is applied? (b) What are the magnitude and direction of the torque with respect to the origin produced by ?⃗?arrow_forwardDetermine the weight B, and the force in the 3 cords. Note that the system is in equilibrium. G D Eƒ30° 3 4 45° A 20 lb B 42.8 Ib, 41.2 Ib, 39.8 Ib, 60.1 Ib 47.8 Ib, 38.6 Ib, 34.2 lb, 54.6 lb 58.3 lb, 47.8 lb, 34.9 lb, 29.7 lb O 26.1 Ib, 34.7 lb, 47.6 Ib, 39.4 lbarrow_forwardTwo couples act on the beam as shown. Determine the magnitude of F so that the resultant couple moment is 300 lb • ft counterclockwise. Where on the beam does the resultant couple act?arrow_forward
- Subject: dynamics of rigid bodies or physicsarrow_forwardResolve the 30-lb force into components along the u and v axes and determine the magnitude of each of these components.arrow_forwardA (-3; 2; 0), B (0; 0; 6), C (2;-3; 0) and D (0;-3; 0), Since FBA = 152, FBC=201 and FBD- 192, find the x, y, z angles that determine the magnitude and direction of the resultant force.. 'odakarrow_forward
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