Homework Answers
HereThe key information here is frictionless inclined planes
with the same vertical height.
Because both are the same height, both masses start with the same
potential energy (well, technically this is incorrect since a
larger mass implies a larger potential, but because of the math
involved, the mass differences won't cause one body or the other to
go faster). It doesn't matter what the incline angle is, because
they're both going to have completely translated all their energy
from potential to kinetic.
Anyway, conservation of energy applies. Therefore, at the bottom
they both have fallen the same height and have the same velocity.
Mass differences will also cancel out.
So answers for a and b questions are 1,2 respectively
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General Physics
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Two uniform spheres of identical mass and radius are placed on
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plane is rough and causes one sphere to roll down the plane; the
other is frictionless, and so the sphere on it slides down the
incline.
(a) Find the ratio of the kinetic energies of the two spheres at
the bottom of the incline: .
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Two uniform spheres of identical mass and radius are placed on inclined planes at the same...
Two uniform spheres of identical mass and radius are placed on
inclined planes at the same height h and inclination angle θ. One
plane is rough and causes one sphere to roll down the plane; the
other is frictionless, and so the sphere on it slides down the
incline.
Find the ratio of the kinetic energies of the two spheres at the
bottom of the incline: .
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i need help with these questions about physics. Elastic Collision Question 8 A 2 kg ball...
i need help with these questions about physics.
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Help with this physics problem thanks! Part A Two 3.0 kg masses are 3.0 m apart...
Help with this physics problem thanks!
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Two uniform spheres of identical mass and radius are placed on
inclined planes at the same height h and inclination angle θ. One
plane is rough and causes one sphere to roll down the plane; the
other is frictionless, and so the sphere on it slides down the
incline.
(a) Find the ratio of the kinetic energies of the two spheres at
the bottom of the incline: .
(b) Find the ratio of their speeds at the base of the...
3. Two identical balls leave from the same height at position 1 & 2 with the same speed but at different angles. When two balls come back to the same height again (at position 3), what is NOT the same for both balls? A. Acceleration B. Potential energy C. Kinetic energy D. Momentum 1 2 3 4. Two balls of equal mass are thrown horizontally with the same initial velocity. They hit identical stationary boxes resting on a frictionless horizontal...
Two uniform spheres of identical mass and radius are placed on
inclined planes at the same height h and inclination angle θ. One
plane is rough and causes one sphere to roll down the plane; the
other is frictionless, and so the sphere on it slides down the
incline.
Find the ratio of the kinetic energies of the two spheres at the
bottom of the incline: .
Problem 2: (6 pts) ) Two masses are connected by a string as shown in the figure below. Mass mB = 2.00 kg moves up while mA 12.0 kg moves down a frictionless inclined. The pulley is frictionless and has a mass M-2.00 kg, and a radius R-0.200 m (1= ½ MR) (a) Draw the free body diagram for the masses and pulley separately. (b) Use Newton's Second Law of Motion to find the resulting acceleration (2pts) (2pts) (2pts) of...
Two masses mA = 2 kg and mB = 1 kg are connected by a stnall pulley Mass maks on an inclined plane at angle e-π/4 radians, and mB is allowed to hang freely. (a) Suppose the string has length 10 m. Take a coordinate system in which the pulley is at the origin. What is the potential energy of the system as a function of the height of mass mg? (b) Find the acceleration of mass ma (either using...
i need help with these questions about physics.
Elastic Collision Question 8 A 2 kg ball initially at rest rolls down a 30-degree inclined plane from a height of 4 meters (assume kinetic and rolling friction are negligible). A 2 kg box initially at rest slides down a 30-degree directionless inclined plane from a height of 4 meters. How do the velocities of the ball and the box compare when they both reach the bottom of their respective inclined planes?...
Help with this physics problem thanks!
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