a homogeneous ruler falls from the top as picture What's its velocity at the bottom?
Water at the top of Niagra Falls is moving at about 9.1 m/s as it passes horizontally over the top of the falls and begins its plunge 53 m to the pool below. Determine the velocity of the water at the bottom. Give your answer in terms of magnitude and direction.
What's the angular velocity of the moon in its orbit?
The highest waterfall in the world is the Salto Angel Falls in
Venezuela. Its longest fall has a height of 807 meters. If water at
the top of the falls is at rest and at 15°C, what is the maximum
temperature of the water at the bottom of the falls? Assume all the
kinetic energy of the water as it reaches the bottom goes into
raising its temperature. The specific heat capacity for water is
4186 J/kg°C.
3. The highest...
A 22.7-kg box is being pushed from the bottom to the top of a frictionless ramp. When the box is pushed at a constant velocity, the nonconservative pushing force does 58.0 J of work. How much work is done by the pushing force when the box starts from rest at the bottom and reaches the top of the same ramp with a speed of 1.50 m/s?
1. The linkage shown is made of two 1.0-meter-long rods. Each rod has a mass of 5 kg. At the instant shown each rod has an angular velocity of -10 rad/s. Gravity acts toward the bottom of the page. What's the acceleration of the point where the 500 N force is applied? 500 N A disc of radius 0.3 m spins at a constant rate of 50 rad/s about its axis (directed toward the ottom of the page), while the...
A rock falls from rest from the top of a cliff. An observer notices that it takes 1.10 s to fall the final one-third of its distance. How high is the cliff?
What is the maximum possible increase in the temperature of water from if it falls from the top of a 36 m high waterfall to the bottom? (Assume that all its potential energy is used up in heating the drop.)
the top picture has the correct answers, the bottom
picture is my attempt. could you tell me where I went wrong with
the sum of forces?
1. The angled beam supports a triangular distributed load and a concentrated force as shown. Determine the reactions at the pin support (A) and at the roller support (B). Start your analysis presenting the adequate FBD. Solutions without FBD will be graded F 400 N 600 N/m 3 m 70° 35° as zero. (50...
James Joule (after whom the unit of energy is named) claimed that the water at the bottom of Niagara Falls should be warmer than the water at the top, 51 m above the bottom. He reasoned that the falling water would transform its gravitational potential energy at the top into thermal energy at the bottom, where turbulence brings the water almost to a halt.. If this transformation is the only process occurring, how much warmer will the water at the...
A 2 kg hangs from the bottom of a 40 cm string fixed at its top end to the ceiling. The mass is then set to move in a horizontal circle at 2m/s under the action of gravity and the tension of the string only. Determine the angle made between the string and the vertical. b) the same mass and string are configured so that the mass can move in a vertical circle, again under the influence of gravity and...