A circular air hockey puck of radius r slides across a frictionless air hockey t

Question

A circular air hockey puck of radius r slides across a frictionless air hockey table 3/26/2018 4:00:00 PM-Due 4/2/2018 11:59:00 PM End Date: 4/6/2018 11:59:00 PM (11%) Problem 1: A circular air hockey puck of radius r slides across a to several forces as shown below. The and direction of each force is given. Forces are applied at either the center of mass of the puck, the outer edge (a between the center and the outer edge. or a 2 Ctheexpertta.com Select the examples below that have a net torque of zero about the aus perpendicular to the page and extending from the center of the Deduct ons Potential 396 97% Sab

Explanation / Answer

1st row 1st column,
net torque, Tnet = (r/2)*2*F - r*F + 3*F*0

= 0 (equal to zero)

1st rwo 2nd column
Net torque, Tnet = r*F - r*F + 3*F*0

= 0 (equal to zero)

1st row 3rd column
Net torque, Tnet = r*F - r*F + F*0

= 0 (equal to zero)

2nd row 1st column
Net torque, Tnet = r*F + r*F

= 2*r*F (not equal to zero)

2nd row 2nd column
Net torque, Tnet = r*F + (r/2)*2*F

= 2*r*F (not equal to zero)

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