A rotating door is made from four rectangular glass panes, as shown in the figure. The mass of each pane is 94.8 kg. A person pushes on the outer edge of one pane with a force of F = 71.7 N that is directed perpendicular to the pane. Determine the magnitude of the door's angular acceleration. 1.2 m, 1.2 m Number Units

A seesaw has length 11.0 m and uniform mass 11.3 kg and is resting at an angle of 30° with respect to the ground (see the following figure). The pivot is located at 8.3 m from the end of the seesaw. What magnitude of force (in N) needs to be applied perpendicular to the seesaw at the raised end so as to allow the seesaw to barely start to rotate? F=? 30 N t

A baseball bat balances 76.1 cm from one end. If a 0.500 kg glove is attached to that end, the balance point moves 26.7 cm toward the glove. $ % Part A Find the mass of the bat. mbat = Submit Provide Feedback 15. ΑΣΦ Search or type URL MacBook Pro Request Answer & 7 * 00 ? kg

A gardener is using a tool as shown in the figure to pull weeds. 24 cm You will notice that the tool is designed with a built-in pivot point about which the torques are applied. If the gardener applies a 1.77 Nm torque (about the pivot point) in order to pull a weed, determine the resistive force (in N) the weed exerts on the weed puller. N

6. A yoyo is dropped as shown in the figure below. Neglect air friction. The mass of the yoyo is 0.160 kg, R = 10 cm and Ro = 2.0 cm. a. Show and label the translational forces acting on the yo-yo's center of gravity. Show and label the force(s) exerting non- zero torque(s) about the yo-yo's center of gravity at their point of application. Only show non-zero torques. b. If the linear acceleration of the yo-yo is 2.0 m/s/s, determine the tension of the string.

A wrench is used to apply a torque to a bolt. Forces F1 through F6 all have the same magnitude. The point of application of force F1 (and F4) is a distance d from the center of rotation of the bolt. The application points of F1, F2, and F3 are all distance d apart, as shown. Use the convention that counter-clockwise torques are positive; clockwise torques are negative. Determine the torque applied on the bolt by F6 in terms of the variables and angles given in the problem.

The fishing pole in the figure below makes an angle of 20.0° with the horizontal. What is the magnitude of the torque exerted by the fish about an axis perpendicular to the page and passing through the angler's hand if the fish pulls on the fishing line with a force F = 125 N at an angle 37.0° below the horizontal? The force is applied at à point L = 1.92 m from the angler's hands. N.m -I 20.0° 37.0 1 20.0° F

a. What is the maximum torque applied by the cable? (Give your answer in N m.) b. What is the torque due to the weight of the bridge? (Give your answer in N m.) c. How far can Lancelot ride out along the bridge before the cable breaks? (Give your answer in m.) Note: At his maximum distance, the torque from the cable will equal the torque from both the weight of the bridge and the weight of Lancelot.

A. Find the required F to achieve Net Torque = 0. Assume b = 2a. B. After a design modification, all forces including F stay the same. If new design is basedon b = 1.5a, what will be the net torque after modifications?

A pulley of mass 0.208 kilograms and radius 4.31 centimeters experiences an unbalanced torque of 0.00244 newton·meters. a. What is the pulley's angular acceleration? Include units in your answer. More information. b. If it started from rest, how much would the pulley have rotated after 2.35 seconds? Include units in your answer. More information.