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Deadrea
Questions (23)
In the drawing below, the leg of a child is in cast and supported in a traction device. The system is in equilibrium and both
1 answer
100 views
Two masses, m1 and m2, are connected to each other as the figure below shows. Mass m1 slides on a frictionless surface over the
1 answer
136 views
The displacement of a particle with a mass of 225 g depends on time and is described by the function x(t) = -3.0t3 + 2.0t2 +
1 answer
184 views
Action–reaction force are
1 answer
77 views
A toy car of mass m is pushed across a horizontal surface. The push gives the toy car a starting speed of 3.50 m/s. The
1 answer
177 views
A gardener pushes a lawn roller through a distance of 20 m. If he applies a force of 20 N in a direction inclined at 60° to the
2 answers
173 views
What is the smallest of the force F (indicated with the arrow perpendicular to the wall on the diagram below) that the 2.0 kg
1 answer
109 views
A friend tells you that since his car is at rest, there are no forces acting on it. How would you reply?
1 answer
104 views
A 6.0 kg crate slides from rest at h1 = 1.46 m down to a horizontal surface where it passes over a 1.60 m rough patch. The rough
1 answer
115 views
A 0.23 kg object experiences air resistance when it falls 17 m to the ground. It hits the ground with a speed of 13 m/s. How
1 answer
126 views
A roller-coaster car has a mass of 500 kg when fully loaded with passengers. At the bottom of a circular dip of radius 40 m (as
1 answer
159 views
A school bus is being pulled along a rough road at a constant speed by a rope attached to a moving tractor. The rope is parallel
1 answer
182 views
Bending is a winter sport in which participants push a 15 kg rock across a horizontal snow patch. In 3.0 seconds, a bender
1 answer
126 views
A block of mass m is at rest on the table. Is it possible for this block at rest to have only a single force acting on it?
2 answers
86 views
A 60 kg man is standing on the 35 kg high table which is at rests on a horizontal floor. Determine the magnitude of the normal
1 answer
125 views
A robot arm controls the position of a video camera and is manipulated by a motor that exerts a force on the arm. The varying
1 answer
110 views
A 30 kg table is pulled by a constant force across a rough horizontal floor with an estimated coefficient of kinetic friction
1 answer
256 views
Determine the power output of a 2.0 g bee walking straight up a windowpane at 3.4 cm/s.
1 answer
94 views
A 291.5 kg motorcycle is accelerating up along a ramp that is inclined 30.0° above the horizontal. The propulsion force pushing
1 answer
136 views
Can an object be in equilibrium if it is moving?
1 answer
87 views
Two forces working on an object with mass m are F1 = 34 N 25° North of West and F2 = 37 N East. By using the perpendicular
1 answer
105 views
The figure shows a 4.0-kg brick moving up an inclined plane at an initial speed of vi = 7.50 m/s. The brick comes to rest after
1 answer
143 views
A 45 kg car is pulled at a constant speed across a rough horizontal road by a rope at an angle of 29.5o above horizontal. How
1 answer
203 views
