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Some common types of forces that you will be dealing with include the gravitational force (weight), the force of tension, the force of friction, and the normal force.
It is sometimes convenient to classify forces as either contact forces between two objects that are touching or as long-range forces between two objects that are some distance apart. Contact forces include tension, friction, and the normal force. Long-range forces include gravity and electromagnetic forces. Note that such a distinction is useful but not really fundamental: For instance, on a microscopic scale the force of friction is really an electromagnetic force.
In this problem, you will identify the types of forces acting on objects in various situations. First, consider a book resting on a horizontal table.
Part A: Which object exerts a downward force on the book?the book itself
the earth
the surface of the table.
Suppose there are two concentric thin walled conducting spheres, the inner one of radius 10 cm and the outer one of radius 12 cm. If the inner one has a charge of 2.2 C and the outer one has -2.2 C, what is the E field at a point 11 cm from the ce..
q1. a certain compact disc player draws a current of 290 ma at 36.0 v. how much power is necessary to operate the
7.4 mol of helium are in a 16 L cylinder. The pressure gauge on the cylinder reads 68 psi. calculate the average kinetic energy of a helium atom
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A 5.00 kg box is pulled by a rope with a force of 25.0 N. Determine the acceleration of the boxes
The differential gear of an automobile axle allows the wheel on the left side of an automobile to rotate at a different angular speed than the wheel on the right side. Find the difference between the angular speeds of the wheels
A heat pump has a coefficient of performance of 3.85 and operates with a power consumption of 7.14 103 W. How much energy does it extract from the outside air
In the Bohr model of the hydrogen atom, an electron in the9thexcited state moves at a speed of2.70104m/s in a circular path of radius4.2810-9m. What is the effective current associated with this orbiting electron?
The plunger of a pinball machine has mass 0.440 kg and is attached to a spring of force constant 132.0 N/m. At what distance xf from equilibrium will the plunger come to rest momentarily
A 2.3 kg mass is released from rest and slides down to a spring with known spring constant of 10X10^3 N/m, compressing it by 30 cm in the process. From what vertical height was the mass released
A projectile of mass 1.500 kg is shot straight up with an initial speed of 16.0 m/s. How high would it go if there were no air resistance
In a game of pool, a cue ball with an initial velocity of 1.25 m/s directed to the right (along the +x-axis) collides with the five ball, Find the cue ball's final velocity
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