Two disgruntled business people are trying to use a revolving door, as it is shown. The...
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 170 N⋅m is required to start a revolving door rotating. If a child can push with a maximum force of 60 N , how far from the door's rotation axis must she apply this force? Express your answer using two significant figures. r=
Two children push on opposite sides of a door during play. Both push horizontally and perpendicular to the door. One child pushes with a force of 165 N at a distance of 0.800 m from the hinges, and the second pushes at a distance of 0.450 m. What force (in N) must the second exert to keep the door from moving? Assume friction is negligible.
Two people lift either side of a piano which is d=3m wide. The piano is held at rest completely off the ground and is in its usual orientation with its top parallel to the ground. The person on the left exerts an upward force of FL=600 N, while the person on the right exerts an upward force of FR=900 N. At what distance x as measured from the left side, is the center of mass of the piano? Can someone...
The drawing shows the top view of two doors. The doors are uniform and identical. Door A rotates about an axis through its left edge, and door B rotates about an axis through its center. The same force is applied perpendicular to each door at its right edge, and the force remains perpendicular as the door turns. No other force affects the rotation of either door. Starting from rest, door A rotates through a certain angle in 3.05 s. How...
7. 00 points 1 Previous Answers SerCP118.1 P.001 A janitor opens a 1.50 m wide door by pushing on it with a force of 58.5 N directed perpendicular to its surface. HINT m) does he apply about an axle through the hinges if the force is applied at the center of the door? (a) What magnitude torque (In N 75 x Nm from the hinges? (b) What magnitude torque (in N.m) does he apply at the 50.000XN.m
18.A Man is trying to get his car back on the road as shown in the figure. He ties one end of a rope to the car and the other end to a tree that is 62 meters away. He pulls at a right angle to the center of the rope with a force of 120 N. the midpoint of the rope is moved 1.5 m from its original position. What is the force acting on the car?
Two people are trying to roll the boulder by applying the forces shown. What is the resultant force in terms its i and j components. R= - 954 N i + 431 j Write the resultant for the force shown in terms of its i and j components
Three charges are at the corners
of an isosceles triangle as shown in the figure . The 5.00 μC charges form a dipole.a) Find the magnitude of the force the
-10.00 μC charge exerts on the
dipole.F= _______ Nb) Find the direction of the force
the -10.00 charge exerts on the
dipole.(Suppose that -axis directs to the top of the image.) = ____________ counterclockwise from the +y - directionc) For an axis perpendicular to the line
connecting the 5.00 μC charges at...
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...