11 Answered Questions for the topic Mechanical Energy
A satellite orbiting the earth has a speed of 5.5 km/s when its distance from the center of the earth is 11,000 km. Is the satellite in a bound orbit?
A satellite orbiting the earth has a speed of 5.5 km/s when its distance from the center of the earth is 11,000 km. Is the satellite in a bound orbit? I have already calculated that the... more
neglecting friction what is the total mechanical energy of ball as it moves along the wooden plane?
Inclined wooden plane by 45º with repect to the table top by placing books under the other edge of the plane. the height of the top of the the wooden plane to the table is 23 cm and the height from... more
what will be the temperature difference between the water at the top and the bottom of the falls?
A waterfalls is 90m high. Assume that all of the potential energy possessed by the water at the top is completely converted to heat energy. What will be the temperature difference between the water... more
What speed will the child reach the bottom of the slide
A 42 kg child slides from the top of a 3 m high playground slide. With what speed will the child reach the bottom of the slide assuming: (a)There is no friction? (b) 23 J of energy is dissipated... more
Physics Mechanical Energy and Friction
An asteroid with a mass of 5.0 x 105 kg collides with the Earth and slides horizontally along the ground without bouncing (not actually possible but just pretend). The velocity of the asteroid... more
Mechanical Energy Conservation Of Linear Momentum
find the initial upthrust on the rocket
a rocket has a mass of top hundred kg and 90% of is fuel. It ejects fuel vapour at the rate of 1 kg per second with a velocity of 500 m per second relative to the rocket .It is suppose that a... more
man of mass m is stationary on a flat car. the car move without friction along horizontal rails. the man starts walking with velocity v relative to the car
A man of mass m is stationary on a stationary flat car. The car can move without friction along horizontal rails. The man starts walking with velocity v relative to the car. Work done by him is
Energy in Simple Harmonic Motion help?
A .150 kg mass is attached to a spring with k=18.9 N/m. At the equilibrium position, it moves 2.39 m/s. How mych mechanical energy does it have?
What is the energy transfer of a battery rolling out of a rolling cup?
A cup is on its side. inside the cup is a double A battery. An object hits the cup forcing the cup to roll. As the cup rolls the batter rolls out. What is the energy transfer of the battery rolling... more
Calculus and Vectors!
A ramp is inclined at 12 degrees to the horizontal. A cart is pulled 8m up the ramp by a force of 120N, at an angle of 10 degrees to the surface of the ramp. Determine the mechanical work done... more
i am trying to find potential and kinetic energy of a pendulum
i found the pe the mass was .1 kg x 9.8 gravity height .155 m the question is calculate the ke of pendulum at its lowest point using the formula mgh=1/2mv2