Angular speed wi = 22 rpm = 22*2pi/60 = 2.303 rad/s
final angular speed wf = 0
angular acceleration = (0-2.303)/7 = -0.33 rad/s^2
m1 = 1.5 kg, m2 = 3.5 kg, d = 3 m
center of mass from m1, r1 = m2*d/(m1+m2) = (3.5*3)/(1.5+3.5) = 2.1 m
moment of inertia I = m1*r1^2 + m2*r2^2
r2 = d - r1 = 3 - 2.1 = 0.9 m
I = (1.5*2.1^2) + (3.5*0.9^2)
I = 9.04 kg m^2
net torque = I*alpha
torque = 9.04*0.33 = 2.98 Nm
Assignment 5. Rotational dynamics Adaptive Follow-Up Problem 7.67 Constants Part A A 15 kg ball and...
A 2.0 kg ball and a 3.0 kg ball are connected by a 1.5 m long rigid, massless rod. The rod and balls are rotating clockwise about its center of gravity at 16 rpm . Part A What torque will bring the balls to a halt in 9.0 s ?
A 1.0 kg ball and a 4.0 kg ball are connected by a 3.0-m-long rigid, massless rod. The rod and balls are rotating clockwise about its center of gravity at 25 rpm. Part A What magnitude torque will bring the balls to a halt in 5.0 s?
A 2.0 kg ball and a 2.5 kg ball are connected by a 2.5 m long rigid, massless rod. The rod and balls are rotating clockwise about its center of gravity at 20 rpm . What torque will bring the balls to a halt in 5.0 s ?
A 1.0 kg ball and a 2.0 kg ball are connected by a 1.2-m-long rigid, massless rod. The rod is rotating cw about its center of mass at 17 rpm . What torque will bring the balls to a halt in 4.6 s ?
A 1.0 kg ball and a 2.0 kg ball are connected by a 1.1-m-long rigid, massless rod. The rod is rotating cw about its center of mass at 22 rpm . Part A What torque will bring the balls to a halt in 4.4 s ?
A 2.0kg ball and a 4.0kg ball are connected by a 3.0m long rigid, massless rod. The rod and balls are rotating clockwise about its center of gravity at 16rpm . What torque will bring the balls to a halt in 9.0s ? Express your answer using two significant figures. Assume the counterclockwise rotation as positive.
can someone help me solve 5-7 5. Two particles of mass 1 kg each are attached to a massless rod a distance of 1 m and 2 m respectively from the axis of rotation. The axis of rotation is perpendicular to the rod. The angular speed of the system is I rad/s. What is the magnitude of the angular momentum of the system (in SI units)? 1kg - 1kg 1 m 2 m Lamur 3 A1 B. 4 1.1.2 Homes...
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in a separate document entitled “Equations for Rotational Dynamics Assignment” • Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly used the data. • Units must...