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A wave of period T=10ms is propagated at a velocity v=250m/s. The wavelength is ?
u = A sin xy, v = - A sin xy
u = x + y. V = x - y
u = 2x2 + cy, v = 3y2
Ou = x + 2y, v = 2x + y.
The contraption below has the following characteristics: m1 = 2.0 x 10^3 kg, m2 = 4.4 x 10^2 kg, the man on top of m2 has a mass m = 6.0 x 10^1 kg, and all surfaces are frictionless. What is the apparent weight of the man?
gyration of the wheel is 22 cm.
Note: the radius of gyration is the point where the axis of rotation passes through. This axis is a
result of the parallel axis theorem. In this problem, since it is given, you can already compute for
what is being asked for.
2. To crack a certain nut in a nutcracker, forces with magnitudes of at least 40 N must act on its
shell from both sides. For the nutcracker of Fig. 12-34, with distances
the tangential speed if it has a radius of 30 cm. Note: tangential speed can be considered as the
linear speed of the wheel.
3. Compute the rotational Kinetic energy of a 25 kg wheel rotating at 6 rev/s if the radius of
gyration of the wheel is 22 cm.
Note: the radius of gyration is the point where the axis of rotation passes through. This axis is a
result of the parallel axis theorem. In this problem, since it is given, you can already compute for
what is being asked for.
4. To crack a certain nut in a nutcracker, forces with magnitudes of at least 40 N must act on its
shell from both sides. For the nutcracker of Fig. 12-34, with distances
the tangential speed if it has a radius of 30 cm. Note: tangential speed can be considered as the
linear speed of the wheel.
a machine part rotates at an angular speed of wi. its speed is then increased at wf at an angular acceleration of a. if both the inital and final angular sppeed are now doubled and the anglure accleration remains the smae , by what factor is the angluar displacement changed?
a penny has mass of about 3g.compute the energy that would be released if it's rest mass were entirely converted into the energy (2.7×10^14J)
Determine the speed of an object whose Kinect energy equals it's rest energy(2.6×10^8m/s)
An airplane circle the earth at 0.6c. how many years must elapse before a clock in the plane and the one on the ground differ by 1second(0.694S)
