John McClane needs to open an elevator door in Nakatomi Plaza, if 32 N-m torque is applied over a rotation of 0.6 rad what will the work done in rotation be? a) 19.2 N-m b) 0.018 N-m c) 53.3 N-m d) 32.6 N-m
John McClane needs to open an elevator door in Nakatomi Plaza, if 32 N-m torque is...
A 16 N m torque is applied to a wheel of mass 1 kg and radius of gyration of 2 m. What is the resulting angular acceleration? a) 3 rad/s2 b) 4 rad/s2 c) 6 rad/s2 d) 10 rad/s2 e) none of the above
Experiment S: Torque Student Name Today's Date Pre-lab Questions I. What is the mathematical definition of torque, ?? 2. What is the unit of torque, t, in the MKS system of units? 3. Are the units of work and torque the same? work and torque? 4. What is the basic difference between the definition of 5. A 50-kg mass is held at 10 cm from an axis of rotation. A 4 N force is applied perpendicular to it. The value...
9. (5 pts) The drawing shows the top view of a door that is 1.68 m wide. Two forces are applied to the door as indicated. What is the magnitude of the net torque on the door with respect to the hinge? 12.0 N 55.0 55.0 12.0 N a. 0N m b. 4.4 N m c. 8.3 N m d. 9.1 N m e. 11N.m
Two bankrobbers are standing side by side, trying to push open the door of a safe which is 1.2 m wide. Each crook pushes with a force of 300 N, one at the center of the door, the other at the handle (far edge from the hinges). The total torque they exert is (A) 180 N-m (B) 270 N-m (C) 360 N-m (D) 540 N-m (E) 600 N-m
A torque of 35.9 N · m is applied to an initially motionless wheel which rotates around a fixed axis. This torque is the result of a directed force combined with a friction force. As a result of the applied torque the angular speed of the wheel increases from 0 to 10.3 rad/s. After 6.20 s the directed force is removed, and the wheel comes to rest 60.2 s later. (a) What is the wheel's moment of inertia (in kg...
A torque of 35.9 N · m is applied to an initially motionless wheel which rotates around a fixed axis. This torque is the result of a directed force combined with a friction force. As a result of the applied torque the angular speed of the wheel increases from 0 to 9.7 rad/s. After 6.10 s the directed force is removed, and the wheel comes to rest 60.2 s later. (a) What is the wheel's moment of inertia (in kg...
A skyscraper in Manhattan has an elevator that weighs 1000 kg when loaded. The elevator is lifted at a constant rate to 480m above the ground by an electric winch motor. The drum of the winch motor is a solid uniform cylindrical drum in which a steel cable can wrap around it. The mass of the drum is 500 kg and has a diameter of 1 m. It takes the elevator a total of 120 s to get to the...
Part I. Circle the letter of the phrase that best completes the sentence: An elevator is slowing down as it moves from the 4th to the 3rd floor. The work done by the force of gravity is: a. positive and the work done by the net force is positive. b. positive and the work done by the net force is negative. c. negative and the work done by the net force is positive. d. negative and the work done by...
part c=d
How much force must you and your friend each apply to the free
end of the door on the same side and perpendicular to the plane of
the door in order to produce the same torque as that produced by
both of you in part (a) above?
N
(d) What is the angular acceleration of the door?
rad/s2
A heavy swing door has a mass of m = 7,500 kg, a width W = 1.9 m, and a...
Q5
Thanks in advance. I will rate up the correct answer, and down the
wrong one.
A heavy swing door has a mass of m = 4,000 kg, a width w = 1.0 m, and a height H = 2.7 m. The door swings about a vertical axis passing through its center. The moment of inertia of this door about the vertical axis of rotation is given by I = 1/12 mw^2. (a) You stand on one side and push...