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Classical Mechanics
Masses on table
Two masses, A and B, lie on a frictionless table, as shown.
They are attached to either end of a light rope of length l which
passes around a pulley of negligible mass. The pulley is attached
to a rope connected to a hanging mass, C. Find the acceleration of
each mass. (You can check whether or not your answer is reason-
able by considering special cases—for instance, the cases MA = 0,
or MA = MB = Mc.)
Two masses, A and B, lie on a frictionless table, as shown.
They are attached to either end of a light rope of length l which
passes around a pulley of negligible mass. The pulley is attached
to a rope connected to a hanging mass, C. Find the acceleration of
each mass. (You can check whether or not your answer is reason-
able by considering special cases—for instance, the cases MA = 0,
or MA = MB = Mc.)
Classical Mechanics
Mass on wedge*
A 45◦ wedge is pushed along a table with constant acceleration A.
A block of mass m slides without friction on the wedge. Find the
block’s acceleration. Gravity is directed down
A 45◦ wedge is pushed along a table with constant acceleration A.
A block of mass m slides without friction on the wedge. Find the
block’s acceleration. Gravity is directed down
Classical Mechanics
I have an experiment about computing the coefficient static friction of an object on an inclined plane. I had a piece of flat wood as the plane, and a plastic prism as the object. We were instructed to slowly incline the plane, and once the object starts moving, we should stop raising the plane. In my understanding, slowly inclining the plane will provide a more accurate maximum height of the inclined plane as the object finally moves down and exceeds the limit of its static friction. What will happen if I suddenly incline the plane? Will I yield the same result as inclining the plane slowly and what is/are the principle/s behind it?
Classical Mechanics
A child starts sledding from rest, going down a 40-m-long 7.5° incline, then coasting across a horizontal stretch. The mass of sled + child is 35 kg, and the coefficient of kinetic friction is 0.060.
Determine how much energy that is transferred to thermal energy.
Determine how much energy that is transferred to thermal energy.
Classical Mechanics
A child starts sledding from rest, going down a 40-m-long 7.5° incline, then coasting across a horizontal stretch. The mass of sled + child is 35 kg, and the coefficient of kinetic friction is 0.060.
What is the total time for the ride?
What is the total time for the ride?
Classical Mechanics
A burner burns a fuel gas entering at 70oF and 1atm, employing 20% excess air with the same condition as the fuel gas. Assuming complete combustion, give the Orsat analysis of the flue gas. Fuel gas composition (%vol) is as follows: 1%O2, 3%CO2, 33%CO, 40%H2, 1%Benzene, 6%ethylene, 6%N2, 10%Paraffins (C12H44). The number of moles of carbon dioxide in the flue gas per 100 moles of fuel gas.
Classical Mechanics
From Earth we can measure the radius of Mars using our telescopes. An estimate for it is 3.39 x 106 m. By sending an exploratory robot to Mars, we determined the acceleration due to gravity on its surface as 3.73 m/s2. Estimate the mass of Mars
Classical Mechanics
What do your What do your think about the total mechanical energy of a system
Select one:
a. can never be negative.
b. is either all kinetic energy or all potential energy, at any one instant
c. is constant, only if conservative forces act
d. is equally divided between kinetic energy and potential energythink about the total mechanical energy of a system
Select one:
a. can never be negative.
b. is either all kinetic energy or all potential energy, at any one instant
c. is constant, only if conservative forces act
d. is equally divided between kinetic energy and potential energythink about the total mechanical energy of a system
Classical Mechanics
What do your think about the total mechanical energy of a system
Classical Mechanics
Two forces act on a 17.2 kg object, A= 27N @27° and B= 43N @ x°. The direction of B is __ degrees if the acceleration is 3.79477 m/s^2 @ 0°
