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Consider a thin rod of mass 3.7 kg, length 1.8m and uniform density. The rod is pivoted at one end on a frictionless horizontal pin. The rod is initially held in horizontal position but eventually allowed to swing down. What is its angular acceleration at the instant it makes angle 49 degrees with the horizontal? The acceleration due to gravity is 9.8 m/s^2.
If an astronaut can throw a certain wrench 14 {rm m} vertically upward on earth, how high could he throw it on our moon if he gives it the similar starting speed in both places.
A coin with a diameter of 3.00 cm rolls up a 30.0 degree inclined plane. The coin starts with the initial angular speed of 60.0 rad/s and rolls in a straight line without slipping. How far does it roll up the inclined plane.
A 25 kg cannon shell is subjected to a constant acceleration of 1200 g while in the cannon barrel. What force is the burning propellant exerting on the shell?
The human body can survive a negative acceleration trauma incident (sudden stop) if the magnitude of acceleration is less than 250 m/s^2.
Determine the magnitude of the butterflys displacement.
A cardboard tube of radius R and length L has a uniform charge density on its surface. Find the potential at a point on the axis of the tube at a distance d from the center.
Rubber stopper attached to one end of the string and 100 g mass attached to the other end. A student gets the rubber stopper going in a horizontal circle above her head.
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
how fast is the mass moving when leaves the spring. Two forces, and , act at a point. has a magnitude of 9.00 and is directed at an angle of 65.0 degrees above the negative x axis in the second quadrant. has a magnitude of 6.00 and is directed at a..
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
In fact, the increased normal force at these large angles makes force of friction too large to move the lawnmower at all.
A ball is thrown from a rooftop with an initial downward velocity of magnitude vo = 5.8 m/s. The rooftop is a distance above the ground, h = 43 m.
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